strstr string function in C programming language
In this tutorial, We will learn about the strstr string function in C programming language and its functionality.
Description
strstr() – In the c programming language, the strstr function is used to locate the first occurrence of the substring pointed by the str2 within str1 string.
Declaration
Syntax for strstr() function is given below
char *strstr( const char *str1, const char *str2);
parameter or argument
str1 – This string finds from str2
str2 – The substring from where its found.
Returns
The strstr() function pointer looks for the first occurrence of the substring(str2) within the string pointed by s1. If s2 can’t find it, it returns a null pointer.
Required Header
the required header for strstr() String function in C Programming language
#include<string.h>
Example
Program 1
“this is the best website for learning to code” is a string . “for” is a substring for find first occurrence in the string.
#include <stdio.h>
#include <string.h>
int main()
{
char myweb[100]="this is the best website for learning to code";
char *p;
p=strstr(myweb,"for");
printf("%s\n",p);
getch();
return 0;
}
When above program me is compiled it will produce the following result
for learning to code
There are other C programming language functions that are similar to the this function
strncmp() function
strcat() function
strcpy() function
strncpy() function
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