The memcmp function compares the first n characters of the object pointed to by s1 to the first n characters of the object pointed to by s2. If the n characters of s1 and s2 are the same then it returns 0, otherwise, it returns a non-zero value. Syntax of memcmp in C: int memcmp(const […]

The strcmp function compares the string pointed to by s1 to the string pointed to by s2. If two strings are the same then strcmp() returns 0, otherwise, it returns a non-zero value. Syntax strcmp in C: int strcmp(const char *s1, const char *s2); Parameters: s1— pointer to the string1. s2— pointer to the string2

The strcat function appends a copy of the string to the end of the destination string (including the terminating null character). The initial character of the source string overwrites the null character at the end of the destination string. Note: If copying takes place between objects that overlap, the behavior is undefined. Syntax strcat in

The memset function copies the value of c (converted to an unsigned char) into each of the first n characters of the object pointed to by s. Syntax memcpy in C: void *memset(void *s, int c, size_t n); Parameters: s— pointer to the destination object. c— Value to be filled. n — Number of bytes

A function is a set of statements that together perform a specific task.  Every C program consists of one or more functions. The main() function is mandatory for the C program because it is the entry point of your C code from where your program is executed. Before starting the function let’s see the advantage