Question

Please do this in C:

Write a program that takes the name of the file that you created as input, find the maximum and minimum among all the numbers in the file, and output them.

Answer 1

#include <stdio.h>

int main() {
    char filename[100];
    int num, min = 0, max = 0, count = 0;
    printf("Enter file name: ");
    scanf("%s", filename);
    FILE *fp = fopen(filename, "r");
    if (fp) {
        while (fscanf(fp, "%d", &num) != EOF) {
            if (count == 0) {
                max = num;
                min = num;
            }
            if (num > max) {
                max = num;
            }
            if (num < min) {
                min = num;
            }
            ++count;
        }
        printf("Maximum value in %s is %d\n", filename, max);
        printf("Minimum value in %s is %d\n", filename, min);
        fclose(fp);
    } else {
        printf("%s does not exists\n", filename);
    }
    return 0;
}