View Code of Problem 3855

#include<stdio.h>
#include<math.h>
#include<string.h>
int main(){
	int t;
	scanf("%d",&t);
	while(t--){
		char s[1000];
		scanf("%s",s);
		int sum=0;
		int b;
		int flag=1;
		int i;
		for(i=0;i<strlen(s);){
			if(s[i]=='+'||s[i]=='-'){
				if(s[i]=='+'){
					flag=1;
				}else{
					flag=-1;
				}
				i++;
				b=0;
				while(s[i]>='0'&&s[i]<='9'){
					b=b*10+s[i]-'0';
					i++;
				}
				sum+=b*flag;
			}else{
				b=0;
				while(s[i]>='0'&&s[i]<='9'){
					b=b*10+s[i]-'0';
					i++;
				}
				sum+=b;
			}
		}
		printf("%d\n",sum);
	}
	return 0;
}