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  1. #include<stdio.h>
  2. int main()
  3.  
  4. {
  5. int sum,num1,num2;
  6. char operator;
  7.  
  8. printf("enter two numbers :");
  9. scanf("%d%d",&num1,&num2);
  10.  
  11. printf("enter operator(+,-,*,/):");
  12. scanf("%s",&operator);
  13.  
  14. if(operator == '+'){
  15. sum=num1+num2;
  16. printf("%d",sum);
  17. }
  18. else if(operator == '-'){
  19. printf("%2d%s\n",num1 - num2);
  20.  
  21. }
  22.  
  23. }
Success #stdin #stdout 0.01s 5292KB
stdin
45
stdout
enter two numbers :enter operator(+,-,*,/):