strnset() function in C Programming Language: Set Characters in String to Specific Value in C

strnset() function sets portion of characters in a string to given character. Syntax for strnset( ) function is given below.

Syntax

char *strnset(char *string, int c);

Important Note

strnset() function is non standard function which may not available in standard library in C.

Program

In this program, first 4 characters of the string Welcome to atnyla is set to "#" using strnset( ) function and output is displayed as ######e to atnyla.

#include<stdio.h>
#include<string.h>
int main()
{
    char str[20] = "Welcome to atnyla";
    printf("Original string is : %s \n", str);
    printf("Test string after string n set" \
           " : %s \n", strnset(str,'#',6));
    printf("After string n set : %s \n", str);
    return 0;
}

Output

Original string is : Welcome to atnyla
Test string after string n set : ######e to atnyla
After string n set : ######e to atnyla
Press any key to continue . . .