Hello everyone,
I am unable to run the following code...any help will be most welcome
facing issues with the while statement.
unable to detect EOL character
I can tackle this problem through the other route as well but I want see whats wrong about this method.
Code:# include <stdio.h> main() { int i=0; char myarray[80]; scanf(" [^\n]",myarray); while ((myarray[i]!='\n') || (myarray[i]=="")) { printf("\n text%d : %c",i,&myarray[i]); ++i; } }
What is this program supposed to do?
Look up a C++ Reference and learn How To Ask Questions The Smart WayOriginally Posted by Bjarne Stroustrup (2000-10-14)
Using a compiler that can tell you about printf/scanf mess-ups would be a big bonus.
Code:$ gcc -Wall foo.c foo.c:4: warning: return type defaults to ‘int’ foo.c: In function ‘main’: foo.c:9: warning: too many arguments for format foo.c:11: warning: comparison between pointer and integer foo.c:11: warning: comparison with string literal results in unspecified behavior foo.c:13: warning: format ‘%c’ expects type ‘int’, but argument 3 has type ‘char *’ foo.c:18: warning: control reaches end of non-void function
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
Here, I am just trying to enter a line of text in an array terminated by a new line character. then I go on to print that line element by element of the array (piece meal method) till the time I encounter new line character.
Actually I am writing a bigger more complex program and its a part of that.
As such this program is not supposed to do anything...
Try this one:
Code:#include <stdio.h> int main(void) { int i=0; char myarray[80]; scanf("%[^\n]",myarray); while (myarray[i]!='\0') { printf("\n text %d: %c",i,myarray[i]); ++i; } putchar('\n'); return 0; }
Regardless, it's still just as unsafe as gets().
It would be better to use fgets().
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
^^^ Definitely!
scanf() is for formatted input, not user input. It's just used for user input while a student is getting started.
I'm sure fgets() should be used more, even in such classes though.
