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Introduction [cont'd]
Input Output Functions [cont'd]
Structures and Unions [cont'd]
# Preprocessor [cont'd]
Strstr in Strings of Programming in C
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Strstr 
Strchr is a string function to take substring. It is taking the substring from first occurance of given string otherwise returns null.
Syntax 
char[] strstr(char[] source_string,char[] finding_character);
Program
#include
void main(){
    char name[] = "knowledge leds";
    //To clear console screen
    clrscr();
    //strstr - fetching a sub-string from first occurance of a string
    printf("%s\n",strstr(name,"le"));
    //If searching string is not exist then strstr function returns null
    printf("%s\n",strstr(name,"all"));
}
Output 
ledge leds
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