What are Scanf ,Printf, CLRSCR, Getch, & Comments in C Language

Scanf:-

It is a predefined f’n. by using this pre-defined f’n we can read the data from user.

• Scanf f’n can any no.of arguments but 1^st argument must be within the double quotes & remaining all arguments should separated with comma(,)
• When we are working with scanf f’n with in the double only. i.e what type of data we are reading same type of format specifier is required
• If scanf fun argument list should be contains & symbols.

Printf():-

It is a pre-defined f’n, by using this f’n we can print the data on console.

• The scientific name of the monitor is called “console”
• When we are working with the printf, it can take any no.of arguments but 1^st argument must be within the double codes and every argument should be separated with ‘,’
• Within the double codes whatever we pass it pins assist i.e. if any format specifiers are there then copy that type of values.

CLRSCR:-

By using this predefined f’n we can clear console data.

• Using clrscr is always optional but it must be required to place after declaration part only.

Getch:-

It is a predefined f’n, by using this predefined f’n we can read a char from keyboard.

• Generally we are planning the getch at end of the program. To wait the o/p screen until we are passing any char’s from keyboard.

Comments:-

When we are using comments that specific part of the prog will ignore by compiler.

• Generally comments are used to provide the description about the logic
• In a CPU they are 2 types of comments are possible i.e single line comments and multiple line. Comments.
• Single line comments can be provide by using two forward slashes(//)
• Multiple line comments can be provided by using /*………….*/