用C++设计一个简单的计算器

#include int main(void){int data1,data2;char op;printf("please input data1 op data2:");scanf("%d %c %d",&data1 ,&op ,&data2);switch (op){case '+':printf("%d + %d = %。0f\n",data1,data2,(double)data1 + (double)data2);break;case '-':printf("%d - %d = %。0f\n",data1,data2,(double)data1 - (double)data2);break;case '*':printf("%d * %d = %。0f\n",data1,data2,(double)data1 * (double)data2);break;case '/':if (data2 == 0){printf("Error!chu shu wei 0。");}else{printf("%d / %d = %。0f\n",data1,data2,(double)data1 / (double)data2);}break;case '%':if (data2 == 0){printf("Error!chu shu wei 0。");}else{printf("%d %% %d=%d3\n",data1,data2,data1 % data2);}break;default:printf("Unknown operator\n");}return 0;}如果要求是浮点数的话换一下数据类型就可以了