简单计算器（利用函数数组指针）带图片

#include<stdio.h>double add(double a,double b){return a+b;}double sub(double a,double b){return a-b;}double mul(double a,double b){return a*b;}double div(double a,double b){return a/b;}int main(){int input=1;double a;double b;double ret;while(input){double (*fun[])(double a,double b)={0,add,sub,mul,div};//定义函数数组指针printf("*******************\n");printf("***1 add   2 sub***\n");printf("***3 mul   4 div***\n");printf("*******************\n");scanf("%d",&input);printf("plese input\n");scanf("%lf,%lf",&a,&b);ret = fun[input](a,b);//读取数组内容printf("=%lf\n",ret);}return 0;

}

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