Most voted "c" questions
C is a general-purpose computer programming language used for operating systems, games, and other high-performance jobs and is clearly distinct from C++. It was developed in 1972 by Dennis Ritchie for use with the UNIX operating system.
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answer358
viewsHow to Manipulate Strings in Python
I was wondering how I can manipulate Python characters. In C, I can do this by adding 1 to a character, if I type "a" for example, it adds 1, and "a" will become "b". Example: char string[20];…
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answer75
viewsChar matrix reference error
I’m trying to make a code for questions, however he error, I believe it’s time to pass the matrix by reference. Code to follow: #include <stdio.h> #include <stdlib.h> #include…
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answer999
viewsCount lines and words from a C text file
I have a problem in the project, this code should count the lines and words of a text file in C but the output of the number of lines is right and the number of words is always 0. //Função que conta…
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answer51
viewsERROR WHEN GIVING CHAR PRINTF
Hello, I’m trying to do an activity using struct, ? /* Program to display Nested Structures in C Programming */ #include<stdio.h> #include<string.h> #include <stdlib.h> struct…
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answer32
viewsI’m not getting the vector from the subprogram into the program,
Do a subprogram that has as input and output parameters: the address of an integer vector and the number of elements of that vector. The subprogram must eliminate from the vector all values that are…
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answer93
viewsDelay in execution of code in C
Hello guys this is the first time I’m looking for help, well I’m a freshman in computer science and I’m having a hard time at a job where the teacher asked me to fix code for a random person in the…
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answer71
viewsCreate resulting strcut in C
I’m doing an exercise where the user inserts the data of a vehicle (brand, year, price) in a struct. After that, the user enters a value. To struct resulting shall show only the data of the vehicles…
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answer168
viewsHow to read a txt matrix
I needed to print a matrix I have on txt in the terminal. This is my txt: 010009070 300001000 070080000 807000000 050076000 064000510 030200000 092400000 000000023 What I’ve already tried: int…
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answer540
viewsOccurrence of letter in string - C
Good afternoon, My goal is to insert a string of up to 500 characters, and then read a letter. Creating, for this purpose a function that counts how many times that letter appears in the text. The…
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answer40
viewscircular list jump
Good evening guys, I’m in need of help with a job. Following: The program must receive 3 input variables m= total number of persons, p= position of chosen person, n= number of jumps. the person who…
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answers169
viewsFunction clone stack value
Hello, I have an activity that asks me some functions, among them a cloning functionValorPilha(struct no **Stack) (this form is mandatory), but whenever I try to compile what is written does not…
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answer127
viewsHow to read String in the best way to use it as a halting condition of a loop?
I’m trying to ask for input to a string and read it as a halting condition of a loop but I’m not getting it. Logic Error. #include <stdio.h> #include <locale.h> #include…
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answer58
viewsProblem with DYNAMIC ALLOCATION with char pointer in structs
I have the following problem: I must create a program that will register an N number of students and the maximum size of each student’s name is M. I must use the following structure: struct Aluno{…
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answer144
viewsPossible error in the logging of a function that returns whether an integer is an Armstrong number
Armstrong numbers are numbers that are the sum of their own digits, each raised to the number of digits. Ex: 371 (3 digits) = 3³ + 7³ + 1³. Knowing this, my algorithm gives error with the number 153…
casked 5 years, 2 months ago Edi Junior 21 -
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answer57
viewsvariable pass by reference between function in c
1) Create a program that has a character array. This vector must have a maximum size TAM = 10. No parameter can be global. The program must have: a. the main function, responsible for interacting…
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answers85
viewsHelp me! C language
I’m starting now and wanted to know what’s wrong, the program opens, I put the values and when you click 'enter' nothing happens, please help me. #include <stdio.h> #include <stdlib.h>…
casked 5 years, 1 month ago Lohan Duarte 19 -
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answer554
viewsError 5% URI C - 1047 - Minutes Play Time
I can’t seem to solve this problem of URI. In the tests I performed, my solution worked perfectly, but when I submit the URI evaluation, I get the message that there is 5% error in the program.…
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answers70
viewsHow to return a data message that does not meet a condition in a repeat loop?
Good night, you guys! I am studying C language by myself and, to train, I am trying to encode a program that reads inputs of metallurgical parameters (alloy, temper and thickness) so that a radius…
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answers699
viewsMultiples of 2 numbers in C
I am doing a program in C that asks for the value of n and two positive integers i and j. With these values I have to calculate n natural numbers that are multiples of i or j and or both. But my…
casked 5 years ago Matheus Santos 41 -
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answer71
viewsError filling a String Array: The first input line is ignored
I’m trying to solve a problem with the URI Online Judge platform: Problem 1024 and I am receiving Wrong Answer 5% (I asked here, because in the URI forum itself I did not get answers). Basically I…
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answer485
viewsRegistration using struct
I need to create a registration algorithm that registers, displays and deletes. I could not in the delete part. some gives me a light plsss!!! #include <stdlib.h> #include<stdio.h>…
casked 5 years ago Laiane Ribeiro 1 -
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answers57
viewsTrack data count shows wrong result
A city hall conducted a survey among its inhabitants, collecting data on the population’s salary. The city wants to know: a) Number of people with a salary higher than R $ 2000,00.Number of people…
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answer82
viewsC language - Infinite loop, not doing the comparison of vectors as I planned
Good afternoon. I’m doing an exercise, I developed a solution but it’s not working, I’m a few days ago trying to solve but. Write a program that reads the age and first name of 10 people. Your…
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answer446
viewsStruct with string in C
I have a tremendous question, I did this algorithm here on C, I need to register patients, name, age, sex, if he’s in the risk group, if he’s with covid 19, then I need to count how many are male…
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answer59
viewsProgram not the first scanf and skip the second scanf of the script
I try to create an algorithm, but when I read the contents of the first scanf, it only prints the first letter of the name. The second scanf that should read a number is ignored and automatically…
casked 4 years, 11 months ago Jorge Gabriel 1 -
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answer28
viewsMemory allocation problem, with large values
Well I’m in trouble on one issue Enunciation Given an integer vector, your task is to find the k-th occurrence (left to right) of an integer v in the vector. To make the problem more difficult (and…
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answers58
viewsThe result comes out another
I have tried to solve this exercise that I picked up on the internet. But it never comes out the value I want. What’s the reason? / João Papo-de-Pescador, a good man, bought a microcomputer to…
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answers1092
viewsHow to create a C Calendar?
I need to elaborate an algorithm that writes the calendar in the following format: I’m testing at 2 months but I can’t maintain lateral alignment. My code is that way: #include <stdio.h>…
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answer128
viewsSave values from a text file to an array
I’m trying to make a code where I need to store numbers from a text file in an array. The code I have is this:: #include <stdio.h> int main() { FILE *f; int v[10]; int N=0;…
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answer387
viewsHow it shows the row and column position of a matrix in C and sums the row and column
Good afternoon Guys!!!! I know the question seems silly, but I’m starting now in programming needed to do a C program with a MATRIX[4][4] as described here below. I’ve been trying for a few days,…
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answer986
viewsProblems running on VSCODE
I am able to compile my file in . C, it is written correctly (it is a simple Hello World), but when I run it, it appears this error message, it finds the.exe file, but fails to run it. I did…
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answer65
viewsdecimal division result
I searched here on the forum and I saw similar questions, but I couldn’t solve the problem. Exercise: "Implement a calculator. The program must ask the user for 3 numbers: 'a', 'b' and 'operation'.…
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answer95
viewserror: assignment to Expression with array type
I’m having a problem where I assign values to the matrix and to the vector but I still have the attribution error. I’m new to the forum and I still don’t know how things work right, if information…
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answer691
viewsThe program does not return to the menu after the function call in C
I created 2 functions, a menu function and another incluirRegistroDeObras which can be enabled by the menu. However. By enabling the incluirRegistroDeObras, i can perform the function, but at the…
casked 4 years, 9 months ago Alexandre Guerreiro 393 -
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answer28
viewsGeneric mapping multiple numerical ranges
I’m writing a code, for making decisions on an 8bit microcontroller, an AVR. I get 8 range of double values, limited by Vf_max and Vf_min, I don’t know which will be the biggest in each track. As in…
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answer58
viewsProblem with Fibonacci Sequence Calculation
I am doing an exercise that is to return the Fibonacci Sequence in C language up to a certain number informed by the user. The problem is that the program instead of calculating up to that number,…
casked 4 years, 9 months ago Matheus Santos 41 -
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answer30
viewsFamily struct problem in c
Hello I’m having trouble in this question: "Write a program that reads and stores in an array the data of 30 persons. These data are the name of the person, his age, and the full names of the father…
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answer420
viewsError: expected declaration specifiers or '...' before 'inputInfoLivro'
void listarcaixas(int opcaixa, inputInfoLivro, inputInfoRevista){ int quantidadeobra = inputInfoLivro(L) + inputInfoRevista(R); int i; for(i=0; i<quantidadeobra; i++){ if(rvist.caixa == opcaixa…
casked 4 years, 9 months ago Linconl Vieira 1 -
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answer50
viewsSomeone could help me work struct with vectors and function, I’m not sure when to pass the data
typedef struct { int cod, num_hab; char sigla_esta[5], estado[30], cidade[30]; }Cidade; main() { //Variaveis Cidade cidades[max]; Estado estados[max]; Pais paises[max]; int op, i, posl, aux; int cc…
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answer35
viewsHow not to transcribe data in the Tudios visual. In C
I need to make a program of a cafeteria that the user needs to enter the item they want and quantity, and at the end of the program everything he bought is shown, its quantities and the total amount…
casked 4 years, 8 months ago user199302 1 -
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answer46
viewsError in C Stack implementation
I am typing the code that is presented in a book and compiling gradually. Mistakes happen where they are "//???????????". Another detail, in the statement of the structure, where we see *Stack, in…
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answer42
viewsChallenge in C. doubt
The challenge is this:: At the university of hackerlandia has the following policy of grades : Every student receives a note which may vary from 0 to 100. All note less than 40 is a red note. Sam is…
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answer70
views5% URI error (in C language)
The code gives error in cases such as 576.73 or 576.43, in the coin field of 0.01 the other field answer correctly. I don’t know exactly the reason to return 2 coins of 0.01 in the above cases, but…
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answer135
viewsHow to write this algorithm in C
The equation A 5+B 5+C 5+D 5+E 5=F 5 such that 0<a<=b<=c<=d<=e<f<=75 has exactly one whole solution. write a program to find it. #include <stdlib.h> #include…
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answer28
viewsI’m facing a problem with Datareader, in the C#programming language, Visual Studio development environment
Hello, all right? I am facing problems with Data Reader, what happens -> I have several forms/Forms, and when trying to enter one of them, in this case, the Sets form, the message appears "There…
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answer321
viewserror in Pow() and sqrt()
I’m finding a mistake in this code, but it looks okay to me. Terminal error after trying to compile(gcc): [in the function "main": Exercise-11.c:(.text+0x6e): undefined reference for "sqrt"…
casked 4 years, 7 months ago Eduardo Pires Rosa 1 -
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answers63
viewsSegmentation failure when printing white space C
I need to do a function that returns a doorman to the first blank space found in the string. When I try to print the blank space the program accuses segmentation failure, which does not happen when…
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answer37
viewsDoubt written in code
//Help, I need to make a menu with the C language switch option, but when I choose one of the options it //ends automatically, is to give the option to choose other dishes and consequently adding…
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answer45
viewsdata not ordered after execution C
I need to put the columns a in order, however, only the names are getting sorted correctly. The functions that sort the notes and sex are not working. Can anyone tell me where I’m going wrong? The…
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answer35
viewsPure C chained list error
I am making a simple chained list where struct has only one 'given' integer variable, the user type the data to be inserted right into the menu and it is played in the function that adds a new…