Printf() FUNCTION

Introduction to the printf Function in C

In C programming, the printf function is a fundamental tool for displaying information on the console. It is part of the standard input/output library (<stdio.h>) and is incredibly versatile for printing formatted output.

To output values or print text in C, you can use the printf() function:

Example:

    #include <stdio.h>

    int main() {

      printf("Hello World!"); // Prints "Hello World!" to the console using printf.
      return 0;
    }

    Output: Hello World!

Explanation:

• When you are working with text, it must be wrapped inside double quotation marks "".If you forget the double quotes, an error occurs.
• You can use as many printf() functions as you want. However, note that it does not insert a new line at the end of the output.
• If you want to go to the new line you can use  "\n".It is called a new line character.

Example:

    #include <stdio.h>

    int main() {
      printf("Hello World!\n");
      printf("I am learning C.");
      return 0;
    }

    Output : Hellow World!

             I am learning C.

• Any characters to be printed after the new line character then appear on the next line of the display.

Basic Usage:

    printf("format string", argument1, argument2, ...);

• Format String: This is a string containing regular characters and format specifiers that define the desired output format.
• Arguments: Values to be formatted and printed, corresponding to the format specifiers in the format string.

Example:

    int number = 50;

    printf("The answer is %d\n", number);

    Output:    The answer is 50

In this example, %d is a format specifier for an integer, and number is the argument.

    float number = 50.1;

    printf("The answer is %f\n", number);

    Output:    The answer is 50.10000

In this example, %f is a format specifier for an float and number is the argument.