box-o-sand/ex24_iofunctions02.c

#include <stdio.h>
#include "dbg.h"


int main(int argc, char *argv[])
{
    int a, b, rc;
    char c;
    char filename[1024 * 2];
    FILE *fp;

    printf("Provide filename from which to inputs\n> ");
    rc = fscanf(stdin, "%s", filename);
    check(rc == 1, "Failed to read filename");
    fp = fopen(filename, "r");
    check(fp != NULL, "Failed to open file %s", filename);

    printf("Reading from file: <a:number> <b:number> <c:letter>\n");
    rc = fscanf(fp, "%d %d %c", &a, &b, &c);
    check(rc == 3, "Failed to read from \"%s\".", filename);

    printf("Read in: a=%d b=%d c=%c\n", a, b, c);
    rc = fclose(fp);
    check(rc != EOF, "Failed to close file \"%s\"", filename);

    return 0;

error:
    return 1;
}