hi guys..
i m getting a problem in executing this particular code..
plz help...
Code:#include<stdio.h> #include<conio.h> int main() { clrscr(); char gen,qua; int yos; printf("enter gender"); scanf("%c",&gen); printf("enter yos"); scanf("%d",&yos); printf("enter qualification"); scanf("%c",&qua); printf("%c%d%c",gen,yos,qua); getch(); return 0; }
someone please verify my answer
ok assume I enter like this
%c does NOT skip whitespaces or characters.Code:enter gender: M enter yos: 23 enter qua: x
you've typed this:
[M][\n][23][\n][x][\n]
line 1: scanf("%c",&gen) looks at the input buffer, sees the M. gen = M. Correct
line 2: scanf("%d",&qua) looks at input buffer, sees the \n. It does not belong to %d, so it skips it and puts 'yos' = 23. correct
line 3: scanf("%c",&yos) looks at input buffer. sees the \n (before x) and assumes that as %c
last line printf is now executed
M23
newline...
also, please view
http://cboard.cprogramming.com/c-pro...-expected.html
Last edited by bos1234; 09-18-2013 at 06:29 PM. Reason: please verify answer
this will solve your problem, however, not sure if its the best solution for future programs.
try this:
If you have Modern C Programming by KING, page 42 has good treatment of scanfCode:#include<stdio.h> int main() { char gen,qua; int yos; printf("enter gender"); scanf("%c",&gen); printf("enter yos"); scanf("%d",&yos); getchar(); //this will soak the \n from the buffer printf("enter qualification"); scanf("%c",&qua); printf("%c%d%c",gen,yos,qua); getchar();getchar(); return 0; }
I wish people would forget that conio.h exists because essentially it doesn't. I see it in a large number of posts here #included just to make sure the program is broken from the start I guess.
@bos1234- yes the getchar function solves my problem.
but sum1 told me to use "flushf or fflush" (not sure of the name) function...i dont know bout the function...if u could help with that function.
fflush() is the name of the function.
The function is for the output stream, not the input stream.
If you want to eat the trailing input someone left, in order the next scanf, fgets or whatever input function you use, gets a fresh input, you should do something like this:
Code:/* Clear trailing input */ while(getchar() != '\n') /* discard */ ;
Code - functions and small libraries I use
It’s 2014 and I still use printf() for debugging.
"Programs must be written for people to read, and only incidentally for machines to execute. " —Harold Abelson
