What is the difference between getch() and getche()?

What is the difference between getch() and getche() in C programming?

17 Answers
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17 Answers
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  • getche() takes input from keyboard and display it immediately without waiting of pressing enter key 
    getch() takes input from keyboard and display it after pressing enter key 
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  • getche() give output without any buffer but the getch() give output with buffer. getch() reads only single character from the screen getche() reads a single character from the keyboard and displays immediately on output screen without waiting for enter key.
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  • getch()-It is a function which is used to take input from keyboard but it deos'nt show any output.
    getche()-It is a function which is also used to take input from keyboard but it shows the output also.
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  • getch() : This function is used to accept single character from user, but it has no echo (display) on screen when it is pressed. Mostly it is used at the end of program, when user need to see final output of his/her program. 

    getche() : This function is used to accept single character from user, and it has echo (display) on screen when it is pressed. 

    example:

    main()
    {
      char ch;
    printf("\nOutput for getch()\n")
    ch=getch();
    printf('Value of ch = %c',ch);

    printf("\nOutput for getche()\n")
    ch=getche();
    printf('Value of ch = %c',ch);
    }

    here in program, it will show press character for the first time as getch() is used, and second time it will show two same character 1 when getche() is called and second in printf()
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  • getch()-doesnt takes the inputs
    getche()-it takes the input
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  • getch():
    getch() is a nonstandard function and is present in conio.h header file which is mostly used by MS-DOS compilers like Turbo C. It is not part of the C standard library or ISO C, nor is it defined by POSIX (Source: conio.h - Wikipedia)
    Like above functions, it reads also a single character from keyboard. But it does not use any buffer, so the entered character is immediately returned without waiting for the enter key.
    getche()
    Like getch(), this is also a non-standard function present in conio.h. It reads a single character from the keyboard and displays immediately on output screen without waiting for enter key.
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  • getch():
    getch() is a nonstandard function and is present in conio.h header file which is mostly used by MS-DOS compilers like Turbo C. 
    it reads  a single character from keyboard. But it does not use any buffer, so the entered character is immediately returned without waiting for the enter key.
    Syntax:
    int getch();
    #include <stdio.h>
    #include <conio.h>
    int main()
    {
    printf("%c", getch());
    return 0;
    }
    Input: g (Without enter key)
    Output: Program terminates immediately.
    But when you use DOS shell in Turbo C,
    it shows a single g, i.e., 'g'
    getche()
    Like getch(), this is also a non-standard function present in conio.h. It reads a single character from the keyboard and displays immediately on output screen without waiting for enter key.
    Syntax:
    int getche(void);
    #include <stdio.h>
    #include <conio.h>
    // Example for getche() in C
    int main()
    {
    printf("%c", getche());
    return 0;
    }
    Input: g(without enter key as it is not buffered)
    Output: Program terminates immediately.
    But when you use DOS shell in Turbo C,
    double g, i.e., 'gg'
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  • getch() and getche() both the functions can take input from the keyboard but getche() consist the echoes to screen where getch() does not have echo on screen
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  • getch() is a nonstandard function and is present in conio.h header file which is mostly used by MS-DOS compilers like Turbo C.
    Like the above functions, it reads also a single character from the keyboard. But it does not use any buffer, so the entered character is immediately returned without waiting for the enter key.

    Like getch(), this is also a non-standard function present in conio.h. It reads a single character from the keyboard and displays immediately on output screen without waiting for the enter key.
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  • getch()- 
    getch() is a nonstandard function and is present in conio.h header file which is mostly used by MS-DOS compilers like Turbo C. It is not part of the C standard library or ISO C, nor is it defined by POSIX 
    Like above functions, it reads also a single character from keyboard. But it does not use any buffer, so the entered character is immediately returned without waiting for the enter key.
    Syntax: int getch();
    getche() -
    Like getch(), this is also a non-standard function present in conio.h. It reads a single character from the keyboard and displays immediately on output screen without waiting for enter key.

    Syntax: - int getche(void); 
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  • Getch take the values and getche take the values and duplicate will be merged 
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  • getch() -displays the input once it is stored
    getche() - displays the input twice I. E. While entering through keyboard as well as after storing it.. That is it echoes the input

    Both give output without  pressing enter key
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  • getch()-getch() is a nonstandard function and is present in conio.h header file which is mostly used by MS-DOS compilers like Turbo C. It is not part of the C standard library or ISO C, nor is it defined by POSIX
    getche()-Like getch(), this is also a non-standard function present in conio.h. It reads a single character from the keyboard and displays immediately on output screen without waiting for enter key.
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  • getch() is use for show output on command window but i dont know getche() so soory
     
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  • getch() and getche() both are non standard functions present in conio.h header file. 
    getch() reads a single character from keyboard and displays the entered character without using enter key , it doesnot buffer any.
    getche() reads a single character from the keyboard and displays immediately on output screen without waiting for enter key.
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  • The getch() function reads a single character from keyboard. It doesn't uses any buffer, so entered data is not displayed on the output screen.
    The getche() function reads a single character from keyword but data is displayed on the output screen. Press Alt+f5 to see the entered character.
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