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Categories / C Tutorial / Ctype h

 

Isblank

Item Value Header filectype.h Declarationint isblank(int ch); Returnreturns 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 .