3033. 删除子串

#include<bits/stdc++.h>
using namespace std;

int main() {
    int n,caseNum=0;
    cin>>n;
    while(n--){
        string s,s0,repl;
        cin>>s>>s0;
        int start=0,len0=s0.length(),len=s.length();        
        printf("case #%d:\n",caseNum++);
        for(int i=0;i<len;++i){
            if(s.substr(i,len0)==s0)i+=len0-1;
            else cout<<s[i];
        }
        cout<<endl;     
    }
    system("pause");
    return 0;
}