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  1. #include<stdio.h>
  2. int main(){
  3.     int num;
  4.  
  5.   do{
  6.     printf("how can i help you : ");
  7.       scanf("%d",&num);
  8.       if(num == 1){printf("Order\n");
  9.     }else if (num == 2){printf("charge money\n");
  10.     }
  11.     else if (num == 3){printf("exit\n");
  12.     }else{printf("Error!!\n");
  13.     }
  14. }
  15.   while( num != 3 );
  16.  
  17.   printf("========Exit========= \n");
  18.   return 0;
  19. }
Success #stdin #stdout 0.03s 25548KB
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stdin 
Standard input is empty
stdout 
#include<stdio.h>
int main(){
    int num;
   
  do{
    printf("how can i help you : ");
      scanf("%d",&num);
      if(num == 1){printf("Order\n");
    }else if (num == 2){printf("charge money\n");
    }
    else if (num == 3){printf("exit\n");
    }else{printf("Error!!\n");
    }
}
  while( num != 3 );
 
  printf("========Exit========= \n");
  return 0;
}
https://ideone.com/JqpgET
language:
PHP (php 7.3.5)
created:
6 days ago
visibility:
public

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