Question

How to print the errno value (error handling) in C

Answer 1

#include <stdio.h>
#include <errno.h>

int main()
{
    FILE * fp;
 
    // 2 - No such file or directory 
    fp = fopen("d:\\data-----txt", "r");
 
    printf("errno: %d\n", errno);
 
    return 0;
}

/*
run:
  
errno: 2
 
*/

 

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