Error Handling in C

 Error Handling

Error handling is essential to handle unexpected situations and ensure robust programs. C provides mechanisms like return values, error codes, and errno variable for error handling. Additionally, you can use perror and strerror functions to print error messages.

#include <stdio.h>

#include <errno.h>

int main() {

    FILE* file = fopen("nonexistent_file.txt", "r");

    if (file == NULL) {

        printf("Error opening file: %s\n", strerror(errno));

        perror("fopen");

        return 1;

    }

    // File processing...

    fclose(file);

    return 0;

}