strstr function

Programming tips

Specifer

Specifier is a typedef-name and a very sensitive in C programming. Using an incorrect specifier for the data type being read or written will generate a run time error.

" ; " after loop

Semoclone ( ; ) is one of the best sensitive symbols in programming. Placing a semicolon ( ; ) after the WHILE or FOR loop is not a syntax error. So it will not be reported by the compiler. However, it is considered to be a logical error as it change

Header file

Missing the inclusion of appropriate header file in c program will generate an error. Such a program may compile but the linker will given an error message as it will not be able to find the functions used in the program.

Comment

Not putting // before the start of single statement comment is a compiler error. Not putting the */ after the termination of block comment is a compiler error.

Test expression

The test expression done on exact statement. The good habit of using test expression on exact or fulfill statement. So do not use floating point numbers for checking for equality in the test expression.

String_ CMP - strstr function


// AHF C PROGRAM SOLVING

//solving here CHARACTER MANIPULATION FUNCTION ( CMP ) 	programming problem

#include<stdio.h>
#include<string.h>
#define pf printf


int main()
{
    char str1[100],str2[100],ptr;

    //input first string data
    pf("Enter the first string: ");
    gets(str1);

    //input substring data
    pf("\nEnter the second string: ");
    gets(str2);


    //find substring
    ptr=strstr(str1,str2);

    if(ptr)
        pf("\nSubstring is found.");
    else
        pf("\nSubstring is not found.");

    return 0;
}

OUTPUT:

Enter the first string: ahf c programming

Enter the second string: f c p

Substring is found.
Enter the first string: programming

Enter the second string: pro#

Substring is not found.