This function appends up to n characters from one string to another.
Syntax:
char *strncat(char *dest, const char *src, size_t n);
Parameters:
- dest: A pointer to the destination string.
- src: A pointer to the source string.
- n: The maximum number of characters to append.
Return Value:
A pointer to the destination string (dest).
Example:
#include <stdio.h>
#include <string.h>
int main() {
char str1[10] = "My";
char str2[] = "World";
strncat(str1, str2, 2); // Append first 2 characters
printf("Concatenated string: %s\n", str1); // Output: My Wor
return 0;
}
Output:
Concatenated string: MyWo
C strncat() method – Interview Questions
Q 1: What is strncat()?
Ans: A safer version of strcat() that appends limited characters.
Q 2: What is the syntax of strncat()?
Ans: strncat(destination, source, n);
Q 3: Does strncat() add a null terminator?
Ans: Yes, it appends "\0".
Q 4: Is strncat() completely safe?
Ans: Safer than strcat(), but destination size must still be managed.
Q 5: Which header file is required?
Ans: .
C strncat() method – Objective Questions (MCQs)
Quiz not found.