C finds if a string exists in string B and counts the number of occurrences

The main application is the strstr function in header file <string.h> Char *     strstr (constChar  Constchar *s2);

Find out if it exists:

1#include <stdio.h>2#include <string.h>3 intMainvoid)4 {5     CharStr3[] = {"ABCABCDABABC"};6     CharStr4[] ="ABC",*b;7     intCount=0;8     intLen =strlen (STR4);9b =strstr (STR3,STR4);Ten     if(b) Oneprintf"find!\n"); A     Else -printf"Not find\n"); -     return 0; the}

Calculate the number of occurrences:

1#include <stdio.h>2#include <string.h>3 intMainvoid)4 {5     CharStr3[] = {"ABCABCDABABC"};6     CharStr4[] ="ABC",*b;7     intCount=0;8     intLen =strlen (STR4);9b =strstr (STR3,STR4);Ten      while(b) One     { Acount++; -b = Strstr (a B +LEN,STR4); -     } theprintf"%d\n", count); -  -     return 0; -}

C finds if a string exists in string B and counts the number of occurrences