#include<stdio.h>

void main()
{
    char a1[]={"asd asasdfg  asd as zx67 asd mklo"},a2[]={"as"};

    char *p,*p1;
    int cent;
    cent=0;
    p=a1;
    p1=a2;

while(*p)
{
   
while(*p1)   
if(*p==*p1)
{
    p++;
    p1++;
}
else

break;
if(*p1=='\0')

cent++;
p++;
}

printf("%d",cent);
printf("\n");

}

要细心
cent++;
p1 = a2;
p++;