Question

In this example you are allowed to use from the C standard library only functions for input and output (e.g. printf(), scanf())

Complete the following function using C programming language:

Complete the function intQ3(floatQ3_input) that takes a student’s average as an input, which is a floating-point value, and returns:

• 4 if the average is in the range 90-100,

• 3 if it is in the range 80-89,

• 2 if it is in the range 70-79,

• 1 if it is in the range 60-69 and

• 0 if the average is between 0 and 59.
• If the average is not in the range 0-100, the program should return -1.

Answer 1

#include <stdio.h>

int intQ3(float Q3_input){
    if(Q3_input>=0 && Q3_input<=100){
        if(Q3_input>=90){
            return 4;
        }
        else if(Q3_input>=80){
            return 3;
        }
        else if(Q3_input>=70){
            return 2;
        }
        else if(Q3_input>=60){
            return 1;
        }
        else {
            return 0;
        }
    }
    else{
        return -1;
    }
}

int main()
{
    float average;
    
    printf("Enter average: ");
    scanf("%f",&average);
    
    printf("Result: %d\n",intQ3(average));
    return 0;
}