HDU 2719 The Seven Percent Solution

水题，坑，开始数组给小了，一支PE，后开始用动态delete位置放错，放在while循环里面只申请了一片位置，多次释放会出错，一直WA

一开始的数组

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;

char str[105];
int main(){
    int len,i;
    while(gets(str)){
        if(str[0]=='#')
        break;
        len = strlen(str);

        for(i=0;i<len;i++){
            if(str[i]==' ')
            cout<<"%20";
            else if(str[i]=='!')
                cout<<"%21";
            else if(str[i]=='$')
                cout<<"%24";
            else if   (str[i]=='%')
                cout<<"%25";
            else if(str[i]=='(')
                cout<<"%28";
            else if(str[i]==')')
                cout<<"%29";
            else if(str[i]=='*')
                cout<<"%2a";
            else
                cout<<str[i];
        }
        cout<<endl;

    }
    return 0;
    }

动态

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;

char *str = new char[10000];
int main(){

    int len,i;
    while(gets(str)){
        if(str[0]=='#')
        break;
        len = strlen(str);

        for(i=0;i<len;i++){
            if(str[i]==' ')
            cout<<"%20";
            else if(str[i]=='!')
                cout<<"%21";
            else if(str[i]=='$')
                cout<<"%24";
            else if   (str[i]=='%')
                cout<<"%25";
            else if(str[i]=='(')
                cout<<"%28";
            else if(str[i]==')')
                cout<<"%29";
            else if(str[i]=='*')
                cout<<"%2a";
            else
                cout<<str[i];
        }
        cout<<endl;

    }
   delete [] str;
    return 0;
    }

用C++的string类，问题简单些

#include <iostream>
#include <string>
using namespace std;


int main(){
string str;
int len,i;
while(getline(cin,str)){
if(str[0]=='#')
break;
len = str.size();

for(i=0;i<len;i++){
if(str[i]==' ')
cout<<"%20";
else if(str[i]=='!')
cout<<"%21";
else if(str[i]=='$')
cout<<"%24";
else if   (str[i]=='%')
cout<<"%25";
else if(str[i]=='(')
cout<<"%28";
else if(str[i]==')')
cout<<"%29";
else if(str[i]=='*')
cout<<"%2a";
else
cout<<str[i];
}
cout<<endl;

}
return 0;
}