呼叫下列C函式時若傳入字串"To be or not to be, that's the question"，則回傳值為何？ int fn(char s) { int num=0; while (s) if (*s++ ==' ') num++; return num; }

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正確答案

此函式計算字串中空格數量，逐字檢查遇到空白字元就累加。

字串 'To be or not to be, that's the question' 有 8 個空格：To|be|or|not|to|be,|that's|the|question，單字間共 8 個空白。

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呼叫下列C函式時若傳入字串"To be or not to be, that's the question"，則回傳值為何？ int fn(char *s) { int num=0; while (*s) if (*s++ ==' ') num++; return num; }