C Basic Syntax

printf() and scanf() functions are in-built library functions in C which are available in C library by default. These functions are declared and related macros are defined in “stdio.h” which is a header file.

printf() function is used to print the “character, string, float, integer, octal and hexadecimal values” onto the output screen. We use printf() function with  below formats

1. %d :- specifier to display the value of an integer variable.
2. %c :- Used to display character,
3. %f :- Used to display float variable.
4. %s :- Used to display string variable.
5. %lf :- Used to display double variable.
6. %x :- Used to display hexadecimal variable.

scanf() function is used to read character, string, numeric data from keyboard.

Please remember below points about C programs.

1. Each statement should end with semicolon.
2. C Program source file has an extension .c
3. We can use {} braces to group the statements in C.

Back to C Language Tutorial Home