用C语言编程实现一个简单的四则运算计算器

#include //函数,读数操作数int getNextNum(){int ret;scanf("%d",&ret);return ret;}//函数,读运算符char getOpt(){return getchar();}//函数,计算int caculate(int op1 ,int op2 ,char opt){if(opt=='+')return op1+op2;if(opt=='-')return op1-op2;if(opt=='*')return op1*op2;if(opt=='/')return op1/op2;return 0;}int main(){int op1,op2;char opt;//计算结果放在第一个操作数op1 = getNextNum();while(1){opt = getOpt();if ( opt == '=' ) break;op2 = getNextNum();op1 = caculate(op1,op2,opt);}printf("%d\n",op1);}return 0;}