Data types: Types Size in bytes Keyword Integer 2 int Floating-point 4 float Double 8 double Character 1 char Escape Sequences: Sequence \a \b \f \n \r \t \v \\ \' \" \? \0 Meaning System alarm (bell) Backspace Form feed Newline Carriage Return Horizontal Tab Vertical Tab Backslash Single quote Double quote Question mark End of string Input output functions: Formatted Unformatted Input Output scanf() getchar() gets() printf() putchar() puts() 3