Putchar 'C 'Output Function  Putchar write a character to standard output (monitor). It takes argument as character and returns...

Getchar Function Getchar takes input a character from standard input (stdin) and return integer value without sign. int main( void...

Getche function Getche is same as getch function, both takes input from keyboard the difference is return type. Getch does not echo...

Getch takes input a character from keyboard.  Getch is different from scanf because user need to press enter explicitly to complete input ...