题目内容

当运行以下程序时输入OPEN THE DOOR，则输出结果是 #include #include char fun(char c) { if(c <='Z' && c>= ‘A’ ) c -= ‘A’ - ‘a’; return c; } main() { char s[80], p = s; gets(s); while(p) { p = fun( p ); putchar(*p); p++; } putchar(‘\n’); }

A. oPEN tHE dOOR
B. Open The Door
C. open the door
D. OPEN THE DOOR

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A. 8
B. 10
C. 6
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