Question

How to read the next character from a given input stream (file) in C

Answer 1

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

// fgetc - Reads the next character from the given input stream

int main(void)
{
    FILE* fp = NULL;
    char filename[32] = "data.txt";

    if (fopen_s(&fp, filename, "r") != 0) {
        perror("File opening failed");
        return EXIT_FAILURE;
    }

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

    if (ferror(fp))
        puts("\nI/O error when reading");
    else if (feof(fp))
        puts("\nRead file successfully");

    fclose(fp);
}


/*

abcd
efg
hi
Read file successfully

*/

 

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