Array not accepting spaces?

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November 15th, 2012, 12:17 PM

SGilligan

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Array not accepting spaces?

For some reason when a user inputs something with spaces (e.g. "Hello World"), the following code will print "You wrote: Hello".

Code:

int main ( void ) {
	char str[25]; 
	printf("Type something:\n");
	scanf("%s", str);
	printf("You wrote: %s\n", str);
	return 0;
}

Shouldn't it print "Hello World"?

November 15th, 2012, 12:26 PM

mitakeet

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RTFM. Try using fgets() instead.

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November 16th, 2012, 04:11 PM

clifford

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In scanf() whitespace is a string delimiter.

December 6th, 2012, 11:59 AM

abhiakhi

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Quote:

Originally Posted by SGilligan

For some reason when a user inputs something with spaces (e.g. "Hello World"), the following code will print "You wrote: Hello".

Code:

int main ( void ) {
	char str[25]; 
	printf("Type something:\n");
	scanf("%s", str);
	printf("You wrote: %s\n", str);
	return 0;
}

Shouldn't it print "Hello World"?

use scanf("%[^\n]s",str); instead of scanf("%s", str);
because as soon as you press spacebar compiler places \0 at that position.

or
use gets(str) statement after including string.h file

Comments on this post

dwise1_aol disagrees: About the gets, which the documentation, if you were to RTFM, tells you to stop using and to use
fgets(stdin) instead. Buffer overflow vulnerabilities.

Array not accepting spaces?

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