求大神帮忙写个c++弹簧摆代码

求大神帮忙写个c++弹簧摆代码

//#include "stdafx.h"//vc++6.0加上这一行.
#include
#include
using namespace std;
char *findC(char const *source,char const *obj){
return strstr(source,obj);
}
int main(void){
char str[100],sub[50],*p;
cout << "Enter a source string...\nstr=";
cin >> str;
cout << "Enter a string to find...\nsub=";
cin >> sub;
if(p=findC(str,sub))
cout << "The substring pointer of \'" << sub << "\' is 0x" << (void *)p << ".\n";
else cout << "No find \'" << sub << "\'!\n";
return 0;
}

如果题目要求不能用库函数，那就用下面的自定义函数：

char *findC(char const *source,char const *obj){
int lo=strlen(obj);
for(;*source;source++){
for(int i=0;i if(source[i]!=obj[i])
break;
if(i==lo)
return (char *)source;
}
return NULL;

你说呢...