Why doesn't getchar() wait for me to press enter after scanf()?

Question

I am learning C and I\'m using \"getchar()\" to stop the command windows so I can see the exercises am doing but it just doesn\'t work. heres a sample:

#incl         


        

Answer 1

Can getchar be getting your carriage return that you enter after the 1?

Answer 2

while reading other answers it just came to me that you can use scanf("%d\n",&n); instead of scanf("%d",&n); to remove new line from buffer. I haven't checked this out though.

Hope it works :D

Answer 3

#include <stdio.h> 
#include<conio.h>
void main() 
{ 
    int value; 
    printf("1. option 1.\n2. option 2.\n3. option 3.\n4. Exit\n\nMake an option: "); 
    scanf("%d", &value); 
    switch (value) 
    { 
        case 1: 
            printf("you selected the option 1."); 
            break; 
        case 2: 
            printf("you selected the option 2."); 
            break; 
        case 3: 
            printf("you selected the option 3."); 
            break; 
        case 4: 
            printf("goodbye"); 
            break; 
        default: 
            printf("thats not an option"); 
            break; 
    } 
    getch(); 
} 

Answer 4

Your scanf only ate the number but not the trailing newline. Putting a newline or white space after the %d will then give you the opposite problem, reading too far.

This is why people don't like scanf.

I would suggest reading an actual line (use fgets(3)) and then using sscanf() to scan the string.