C Tutorial/ctype.h/isspace
isspace
Item Value Header file ctype.h Declaration int isspace(int ch); Return returns nonzero if ch is a white-space character, including space, horizontal tab, vertical tab, formfeed, carriage return, or newline character; otherwise zero is returned.
#include <ctype.h>
#include <stdio.h>
int main(void)
{
char ch;
for(;;) {
ch = getchar();
if(isspace(ch)){
printf("%c is white space\n", ch);
}
if(ch == "."){
break;
}
}
return 0;
}