CS256 - Principles of Structured Design Fall 2021

Displaying ./code/cs256su21code/midtermSol/p2.c

/*
2. 
   Give me code (not a complete program) for a loop that will read integers from user input 
   and will accumulate a sum of all positive even numbers. Terminate that loop when a 
   non-integer is read and output the sum.

   You must declare all variables used in the loop, initialize variables when necessary.

   Hint: You will want to set up your loop so that it will run as long as scanf is still 
         reading integers. Read the C Lesson on the class website if you're not clear on this.

*/

#include <stdio.h>

int main(){

   int sum = 0, n;

   printf("Enter some numbers: ");
   while(scanf("%d", &n) == 1){
      if(n <= 0) continue;
      if(n % 2 == 0)
         sum = sum + n;
   }

   printf("sum of evens = %d\n", sum);

   return 0;

}