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getch() Function in C Programming Language
getch() Function in C
The getch() is a predefined non-standard function that is defined in conio.h header file. It is mostly used by the Dev C/C++, MS- DOS's compilers like Turbo C to hold the screen until the user passes a single value to exit from the console screen. It can also be used to read a single byte character or string from the keyboard and then print. It does not hold any parameters. It has no buffer area to store the input character in a program.
Syntax for getch() Function in C
#include <conio.h>
int getch(void);
/* wait for any character input from keyboard by getch() function example. */
// C code to illustrate working of
// getch() to accept hidden inputs
#include <conio.h>
#include <dos.h> // delay()
#include <stdio.h>
#include <string.h>
void main()
{
// Taking the password of 8 characters
char pwd[9];
int i;
// To clear the screen
clrscr();
printf("Enter Password: ");
for (i = 0; i < 8; i++) {
// Get the hidden input
// using getch() method
pwd[i] = getch();
// Print * to show that
// a character is entered
printf("*");
}
pwd[i] = '\0';
printf("\n");
// Now the hidden input is stored in pwd[]
// So any operation can be done on it
// Here we are just printing
printf("Entered password: ");
for (i = 0; pwd[i] != '\0'; i++)
printf("%c", pwd[i]);
// Now the console will wait
// for a key to be pressed
getch();
}
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