String h C Tutorial

Item Value
Header filestring.h
Declarationchar *strstr(const char *str1, const char *str2);
FunctionReturns a pointer to the first occurrence of *str2 in *str1 or a null pointer if there str2 is not part of str1.
ReturnIt returns a null pointer if no match is found.

#include 
  #include 
  int main(void)
  {
    char *p;
    p = strstr("this is a test", "is");
    printf(p);
    return 0;
  }
is is a test