Question

Programming in C (using only #include <stdio.h>)

1. Create and use a new function called average.

2. Average will accept two integer arguments, (here I will name them sum and n). n is the count of values included in sum.

3. The function will return the integer average of sum.

4. Define and use a function that checks an integer to see if it is positive (returns true if the integer is positive)

Note: Choosing proper definition attributes (names, arguments, return type) and behavior are part of the assignment. For example, function names should reflect the purpose and behavior of the function.

Suggested Strategy

1. Create the function average with two integer arguments and with integer return type.

2. The body of average only needs a return statement. The return value is the expression used to compute average: sum/n.

3. Replace the expression for computing the average in main with a call to function average.

Answer 1

#include <stdio.h>

int average(int n, int sum) {
    int y;
    y = sum / n;
    return (y);
}

int positive(int x) {
    if (x > 0) {
        return 1;
    } else {
        return 0;
    }
}

int main(void) {
    int n;
    scanf("%d", &n);
    if (n < 1) {
        printf("Error:\n");
        return 1;
    }
    int x;
    x = 0;
    int sum;
    sum = 0;
    int b;
    int i;
    i = 0;
    while (i < n) {
        scanf("%d", &b);
        if (positive(b)) {  // use positive function to check if b is positive. every else seems good..
            sum = sum + b;
            x = x + 1;
        }
        i = i + 1;
    }
    if (x == 0) {
        printf("no positive numbers\n");
    } else if (x > 0) {
        printf("%d", average(x, sum));
    }
    return 0;
}