Thread: Programing question

I am taking my first programming course. I am frustrated with my current assignment which is to creat a program that adds three numbers and finds their average. My problem is how to define "sum" and "average." This is, in part, my program:

int first_number
int second_number
int third_number

printf("Enter first_number;second_number, and third_number: ");
scanf("%d%d%d", &first_number, second_number, and third_number);

When I get to this part how do I "define" sum and average?

Thanks for your help. P.S. I am using the Borland Command Prompt programming software.

Mart00

Just thought you might like to know your scanf should be

Code:

scanf("%d%d%d", &first_number, &second_number, &third_number);

hobo

I tried to make things as readable as possible:

Code:

#include <stdio.h>

int main( void )
{
   // _1, _2, _3 = input numbers from the user
   // We use these numbers to find the average of them

   int _1, _2, _3;

   // t = Total of all of the 3 input numbers added together
   // a = Average of the input numbers

   int t;
   int a;

   // Ask the user for the numbers seperated by a space
   
   printf( "Enter all three numbers seperated by a space: " );
   scanf( "%d %d %d", &_1, &_2, &_3 );
   
   // Calculate the total

   t = _1 + _2 + _3;

   // Get the average: TOTAL / TOTAL_NUMBERS

   a = t / 3;

   // Output average

   printf( "%d\n", a );

   // Exit success

   return 0;
}

Some example runs:

Code:

Shiva:/home/kleid/Programming/Laboratory# ./a.out
Enter all three numbers seperated by a space: 3 5 2
3

Enter all three numbers seperated by a space: 1 5 10
6

Enter all three numbers seperated by a space: 10 30 80
37