找出字串个数

#include <stdio.h>
#include <string.h>

int sub_str( const char *main, char *sub )
{
	char *p1, *p2;
	int num = 0;

	
	while( *main != '\0' )
	{
		
		p1 = main;
		p2 = sub;

		if(strstr( p1,p2 ) != NULL)
		{	
			num++;
			printf( "in the strstr\n" );		
		}
		/*while( *p1 == *p2 )
		{
			printf( "%c", *p1 );			
			p1++;
			p2++;	
		}
		if( *p2 == '\0' )
		{
			printf( "###\n" );
			num++;			
		}*/		
		
		main++;
	}
	
	return num;
}

int main()
{
	char *s = "owang li wang china zhongguo li li wang uestc wang ue wang wang";
	char *sub = "wangkai";
	int n = 0;

	n = sub_str( s , sub);
	printf( "sub = %d\n" , n );
	
	return 0;
}