2016HUAS暑假集训训练题 F - 简单计算器

#include <stdio.h>
#include<string.h>
int main()
{
	int t,l ;double sum;double num[200];
    while(scanf("%d",&t))
	{
		l=0;
		sum = t*1.0;
		char c;if(t==0&&(c = getchar())==‘\n‘)return 0;
		while((c = getchar())!=‘\n‘)
		{
			
			if(c==‘*‘) { scanf("%d",&t);sum*=t;}   //算出含*的值 
			 if(c==‘/‘) { scanf("%d",&t);sum/=t*1.0;} // 算出含/的值
			 if(c==‘+‘)
			{
				num[l++] =sum; scanf("%d",&t);sum = t*1.0;  //把sum存入数组
			}
			if(c == ‘-‘)
			{
				num[l++] = sum; scanf("%d",&t);sum = -t*1.0;//把sum存入数组
			}
		}
		 num[l++] = sum;
		double sun = 0;
		for(int i = 0; i < l;i++)  对sum求和  算出表达式的值
			sun += num[i];
	printf("%.2lf\n",sun);	
	}
}