how do I save the data entry permanently

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I want to create a C program in which the user enters his name and this is saved permanently, but the user name is only saved until the program closes. How do I make the program to leave user data saved permanently?

c database

  • Post your code, so it’s better to help you.

  • Explain better what you’re doing.

  • You need to save the data in a database?

  • Duplicate: http://answall.com/questions/105344/como-eu-fa%C3%A7o-o-meu-programa-em-c-ter-uma-Mem%C3%B3ria-permanente-isso-isso-%C3%A9-poss%C3%Advel

  • Be clearer. Post your code. If none of the answers given so far is accepted try to rephrase the question.

2 answers

1

The stdio library. h has functions to create, read and write to txt files, so you can keep this data logged. Here is an example:

#include<stdio.h>

FILE*arquivo;
char nome[20];

int main()
{
    arquivo=fopen("exemploTXT.txt","w");
    printf("Nome: ");
    gets(nome);
    fprintf(arquivo,nome);
    fclose(arquivo);

}

1

You can try to create a pointer that writes in files. For this, try the following:

FILE *arq = fopen("endereço_do_teu_arquivo", "w"); //Esse parâmetro w significa escrita (write)

every time you save your data to the specified file, do the following:

fprintf(arq, "%d", dado); //Isso se o dado a ser salvo for do tipo inteiro.

At the end of the program run the command:

fclose(arq) //Este comando fecha o arquivo salvo

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