strnset() function in C
The strnset() function is a builtin function in C and it sets the first n characters of a string to a given character. If n is greater than the length of string, the length of string is used in place of n.
Syntax:
char *strnset(const char *str, char ch, int n);
Parameters:
- str: This is the original string in which some character are replaced by a given character.
- ch: ch represents the given character.
- n: n represents the number of character which is replaced by the given character.
Return Value: It returns the modified string obtained after replacing the first 
characters of the given string str.
Below programs illustrate the strnset() function in C:
Program 1:
// C program to illustrate // the strnset() function #include <stdio.h> #include <string.h> int main() { char str[] = "GeeksforGeeks"; printf("Original String: %s\n", str); // First 5 character of string str // replaced by character '*' printf("Modified String: %s\n", strnset(str, '*', 5)); return 0; } |
Output:
Original String: GeeksforGeeks Modified String: *****forGeeks
Program 2:
// C program to illustrate // the strnset() function #include <stdio.h> #include <string.h> int main() { char str[] = "Computer Science"; printf("Original String: %s\n", str); // First 5 character of string str // replaced by character '*' printf("Modified String: %s\n", strnset(str, '*', 5)); return 0; } |
Output:
Original String: Computer Science Modified String: *****ter Science
Note: The strnset() function is not a part of the standard C library and thus might not run on the online compilers.
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