Question

How to create, write, read, and remove a file in C

Answer 1

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
    const char* fname = "d:/info.txt";
    int status = EXIT_FAILURE;

    FILE* fp = fopen(fname, "w+");
    if (!fp) {
        perror("File opening failed");
        return status;
    }
    fputs("text to write to file\n", fp);
    rewind(fp);

    int ch;
    while ((ch = fgetc(fp)) != EOF) {
        putchar(ch);
    }

    if (ferror(fp)) {
        puts("Error reading file");
    }
    else if (feof(fp)) {
        puts("End of file - success");
        status = EXIT_SUCCESS;
    }

    fclose(fp);
    remove(fname);

    return status;
}



/*
run:

text to write to file
End of file - success

*/

 

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