Cod sursa(job #2306542)
Utilizator | Data | 22 decembrie 2018 15:22:26 | |
---|---|---|---|
Problema | Evaluarea unei expresii | Scor | 100 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 0.7 kb |
#include<cstdio>
char s[100000],*p=s;
int E(int l)
{
int x,y;
if(l==2)
if(*p=='(')
p++,x=E(0),p++;
else
for(x=0;*p>='0'&&*p<='9';p++)
x=x*10+*p-'0';
else
for(x=E(l+1);(!l&&(*p=='+'||*p=='-'))||(l&&(*p=='*'||*p=='/'));x=y)
if(!l)
if(*p=='+')
p++,y=x+E(l+1);
else
p++,y=x-E(l+1);
else if(*p=='*')
p++,y=x*E(l+1);
else
p++,y=x/E(l+1);
return x;
}
int main()
{
freopen("evaluare.in","r",stdin),freopen("evaluare.out","w",stdout),scanf("%s",s),printf("%d",E(0));
}