#include <stdio.h>

int main(int argc, char * argv[]) {
    float accumulator = 0.0;
    int num_of_times = 0;
    int ii = 1;
    float average = 0.0;

    // Ask until we have a valid input
    while (1) {
        // Get the user input
        printf("How many?: ");
        scanf("%d", &num_of_times);
        printf("\n");

        // If number of times to run is less than 0,
        // tell them, and try again
        if (num_of_times <= 0) {
            printf("Please enter a number greater than 0.\n\n");
        } else{
            // We have a valid number now, break out of this loop
            break;
        }
    }

    // Now that we have the number of times to ask
    // the user for a number, do it
    for (ii = 0; ii < num_of_times; ii++) {
        float user_input = 0.0;

        // Get the user input to add to
        // the accumulator
        printf("User Number: ");
        scanf("%f", &user_input);

        // Add the input
        accumulator += user_input;
    }

    // Get the average
    average = accumulator / (float)num_of_times;

    // Display it to the user
    printf("\nAverage = %f\n", average);

    return 0;
}