getchar() function

[mahiapkum]

Hello,
I have a code which uses getchar().

#include<stdio.h>
int main()
{
        char ch;
        ch = getchar();
        if(ch == 'Y')
        {
                printf("Beautiful World\n");
        }
        else
        {
                printf("Cruel World\n");
        }
        ch = getchar();
        if(ch == 'N')
        {
                printf("Second getchar\n");
        }
        else
        {
                printf("Second getchar else part\n");
        }
        return 0;
}

and the o/p is
Beautiful World
Second getchar else part

the second getchar() is not waiting to enter the character from the user....

[mattmao]

Hi, you need to clear keyboard buffer before asking the user to inter the second char, for example:

#include<stdio.h>
int main()
{
char ch;
ch = getchar();
if(ch == 'Y')
{
printf("Beautiful World\n");
}
else
{
printf("Cruel World\n");
}
while(getchar()!='\n');
ch = getchar();
if(ch == 'N')
{
printf("Second getchar\n");
}
else
{
printf("Second getchar else part\n");
}
return 0;
}

Note this line of code:
while(getchar() !='\n');

It does this job for you. Now I hope this code works as you intended to.

[mahiapkum]

could u pls explain the line "while(getchar( )!='\n');" the code is working fine but i didnt understand how the above line of code works.

Hi, you need to clear keyboard buffer before asking the user to inter the second char, for example:

#include<stdio.h>
int main()
{
char ch;
ch = getchar();
if(ch == 'Y')
{
printf("Beautiful World\n");
}
else
{
printf("Cruel World\n");
}
while(getchar()!='\n');
ch = getchar();
if(ch == 'N')
{
printf("Second getchar\n");
}
else
{
printf("Second getchar else part\n");
}
return 0;
}

Note this line of code:
while(getchar() !='\n');

It does this job for you. Now I hope this code works as you intended to.

[rhitam30111985]

could u pls explain the line "while(getchar( )!='\n');" the code is working fine but i didnt understand how the above line of code works.

program wont get out of the while loop until user presses the 'enter' key which is nothing but the newline character('\n') ..once press enter.. it will take the next character.