Question

I have written two programs. In the first one I’m not using getchar to take a character from keyboard, in this case, the compilation is completely missing the second scanf. So to overcome this I have used getchar. In this case I’m successfully able to give input but comparison is not happening. Though I have given input as “d” and “d” output is “bye” only.

#include<stdio.h>
main(){
    char c,f;
    printf("e");
    scanf("%c",&c);
    printf("one more");
    scanf("%c",&f);
    if(c=='d'&&f=='d')
        printf("hi");
    else
        printf("bye");

}

with getchar

#include<stdio.h>
 main(){
    char c,f;
    printf("e");
    scanf("%c",&c);
    printf("one more");
    scanf("%c",&f);
    getchar();
    if(c=='d'&&f=='d')
        printf("hi");
    else
        printf("bye");

}

Answer 1

The new line character will remain in standard input as it will not be consumed by the scanf("%c"). This means the second scanf() reads the newline charcacter, and not the next input. Changing to scanf(" %c") would be a solution, which will skip leading white space.