Output Functions in C Programming Language

In C programming language output functions are the functions through which the result is displayed on the standard output device like monitor.
Following are the output functions of C language -

1. putchar( ) – This function displays the character on the screen which is already inputted by using the getchar( ) function. For ex - putchar(ch); This will display the character which was stored in the variable ch.
2. putch( ) – This function is almost similar to putchar( ) function. It is used to display only one character on the screen which is stored by using getch( ) function. It’s syntax is same as the putchar fucntion but the keyword here used is ‘ putch ‘ instead of putchar.
3. puts( ) – It will display the whole string on the screen which user has already inputted by using the gets( ) function. It can also print the message. After printing the string or message it moves the cursor to the next line. It’s syntax is -

   puts(nm);
   Or
   puts("Text line or some message")
   You can also display some text line or message on the screen by
   using this function with the double quotes.

4. printf( ) – This function is used to print both values of variables and messages. It can also display the character strings. The general syntax is -

   printf("control strings",v1,v2,v3);
   printf("message or text line");
   for ex -
   printf("Hello world");
   printf(" Sum of two numbers is %d",a);
   printf("%f,%d",m,a);

   You can also use both message and format codes together as you can see in the example.