[Algorithms]Calculator Stack
keywords: [Algorithms]Calculator Stack
keywords:计算器代码、Calculator
#include "stdio.h"
#include "string.h"
#define MAX 1001
double stack[MAX];
int tail;
int main(){
int a;
while(scanf("%d ",&a)&&a!=0){
tail=0;
stack[++tail]=1.0*a;//tail始终指向末尾数字位置
//1.入栈所有数据(如果遇到*/号,只更新栈尾)
char ch1,ch2;
while(scanf("%c %d%c",&ch1,&a,&ch2)!=EOF){
if(ch1=='+'){
stack[++tail]=1.0*a;//push
}else if(ch1=='-'){
stack[++tail]=-1.0*a;//push neg
}else if(ch1=='*'){
stack[tail]=stack[tail]*a;//update tail
}else if(ch1=='/'){
stack[tail]=stack[tail]/(double)a;//updata tail
}
if(ch2!=' ')
break;
}
//2.把栈里头的东西全部加起来,求和
double result=0;
for(int i=1;i<=tail;i++)
result+=stack[i];
printf("%.2lf\n",result);
}
return 1;
}
原文:https://blog.csdn.net/JIEJINQUANIL/article/details/51405381