problem 12

#include <stdio.h>

int main() {
    int marks;

    printf("Enter marks: ");
    scanf("%d", &marks);

    if (marks >= 80 && marks <= 100) {
        printf("Grade: Distinction\n");
    } else if (marks >= 60 && marks < 80) {
        printf("Grade: First class\n");
    } else if (marks >= 40 && marks < 60) {
        printf("Grade: Second class\n");
    } else if (marks < 40) {
        printf("Grade: Fail\n");
    } else {
        printf("Invalid input\n");
    }

    return 0;
}

Enter marks: