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  1. #include <stdio.h>
  2. int main()
  3. {
  4. int a,b,c,sum;
  5. float ave;
  6. printf("Enter 3 numbers a b c:");
  7. scanf("%d %d %d",&a,&b,&c);
  8. sum = a + b + c;
  9. ave = sum / 3.0;
  10. printf("sum = %d\nave = %.2f",sum,ave);
  11. return 0;
  12. }
  13.  
Success #stdin #stdout 0s 5324KB
stdin
7 8 9
stdout
Enter 3 numbers a b c:sum = 24
ave = 8.00