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- Hey, guys, what’s up? I am starting to learn C language and installed it manually in my Ubuntu 20.04 OS gcc 9.3.0. I installed codeblocks 20.3:
Starting Code::Blocks Release 20.03 rev 11997 2020-04-18, 19:47:24 - wx3.0.4 - gcc 9.3.0 (Linux, Unicode) - 64 bit Ending application because Another instance has been Detected!
I made the settings in the codeblocks application, such as: the terminal, the instances and also when starting I created a project. However, when executing this code:
#include <stdio. h> #include <stdlib. h> #include <locale. h>
void main() {
//Permite usar acentos
setlocale(LC_ALL, "");
printf("Olá");
float b = 50.6;
printf("O valor de b é %f\n," b);
printf("f%", &b);
int a = 60;
printf("%d", a + b);
printf("o valor de a é = %d\n", a );
scanf("%d", &a);
char letra = "t";
printf("O valor de c é = %c \n", letra);
fflush(stdin);
scanf("%c", &letra);
printf("O valor de c mudou para %c", letra);
}
the codeblocks returns in the terminal:
Process returned 0 (0x0) execution time : 0.001 s
Press ENTER to continue.
In logs & others in codeblocks:
||=== Build file: "no target" in "no project" (compiler: unknown) ===|
||=== Build finished: 0 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|
Does anyone know how to solve this problem?
Thanks in advance to those who are willing to understand the problem, Thank you.
Here:
printf("O valor de b é %f\n," b);to,must precedeband not being inside the format string. This:printf("f%", &b);has no sense, the format is syntactically wrong. This:char letra = "t";is wrong, the correct is:char letra = 't';, quotes apply to strings and not to a variable declared as a single character.– anonimo
Hello. I made the minor modifications to the syntax you specified, but not yet compiled. Thank you very much for entering the errors.
– Caçador de Bolsominions
I hope you know how to interpret the message "Ending application because Another instance has been Detected!". With the appropriate changes here ran as expected. The command
fflush(stdin);has undefined behavior for incoming streams (maybe works on some S.O.).– anonimo