字符串的包含

#include<iostream>
#include <stdio.h>
#include <string>
using namespace std;


int getlength(char* a)
{
int length = 0;
while (*a++ != '\0')
{
length++;
}
return length;
}
bool  stringcontainer(char* a, char* b)
{
int j = 0;
int ia = getlength(a);
int ib = getlength(b);
for (int i = 0; i <ib; i++)
{
for(j = 0; j < ia&&(b[i]!=a[j]); j++)
;
if (j>=ia)
return false;
}
return true;
}
//测试程序：
int main()
{
char* s1 = "AQWESF";
char* s2 = "ASD";


if (stringcontainer(s1, s2))
cout << "子集" << endl;
else
cout << "不是子集";


}