C/ctype.h/isblank
int isblank(int ch)
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//Declaration: int isblank(int ch); //Return: returns nonzero if ch is blank.
By default, the blank characters are space and horizontal tab. #include <ctype.h> #include <stdio.h> int main(void) { char ch; for(;;) { ch = getchar(); if(ch == ".") { break; } if(isblank(ch)){ printf("%c is a word separator\n", ch); } } return 0; }
/* q q is a letter w w is a letter q q is a letter .
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