Strings are often needed to be manipulated by programmer according to the need of a problem. All String manipulation can be done manually by the programmer but, this makes programming complex and large. To solve this, the C supports a large number of string handling functions.
There are numerous functions defined in "string.h" header file. Few commonly used string handling functions are discussed below:
Function | Work of Function |
strlen() | Calculates the length of string |
strcpy() | Copies a string to another string |
strcat() | Concatenates(joins) two strings |
strcmp() | Compares two string |
strlwr() | Converts string to lowercase |
strupr() | Converts string to uppercase |
Strings handling functions are defined under "string.h" header file, i.e, you have to include the code below to run string handling functions.
#include
gets() and puts()
Functions gets() and puts() are two string functions to take string input from user and display string respectively as mentioned in previous chapter.
#include
int main(){
char name[30];
printf("Enter name: ");
gets(name); //Function to read string from user.
printf("Name: ");
puts(name); //Function to display string.
return 0;
}
Though, gets() and puts() function handle string, both these functions are defined in "stdio.h"header file.
