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  1. #include <stdio.h>
  2.  
  3. int main()
  4. {
  5. int num1,num2,num3,sum;
  6. float avg;
  7. printf("enter 3 numbers:");
  8. scanf("%d %d %d",&num1,&num2,&num3);
  9. sum=num1+num2+num3;
  10. avg=(float)sum/3;
  11. printf("sum=%d\n",sum);
  12. printf("average=%f\n",avg);
  13. }
Success #stdin #stdout 0s 5324KB
stdin
Standard input is empty
stdout
enter 3 numbers:sum=-832845741
average=-277615264.000000