38 lines
747 B
C++
38 lines
747 B
C++
#include <iostream>
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#include <cstdio>
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#include <cstring>
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using namespace std;
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int main()
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{
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double num[205];
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int i;
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double s;
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char f;
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double sum;
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while(cin>>s)
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{
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memset(num,'\0',sizeof(num));
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num[0]=s;
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i=0;
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f=getchar();
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if(f=='\n'&&s==0)break;
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while(1)
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{
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cin>>f>>s;
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if(f=='*')num[i]*=s;
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else if(f=='/')num[i]/=s;
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else if(f=='+')num[++i]=s;
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else
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{
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num[++i]=-s;
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}
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if(getchar()=='\n')break;
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}
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sum=0;
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for(i;i>=0;i--)
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sum+=num[i];
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printf("%.2lf\n",sum);
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}
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return 0;
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}
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