[C语言函数] long change(int num) { ind,m=num;
问题:
[C语言函数] long change(int num) { ind,m=num; long result mul; if (num<=0|| (1) /*若num不大于0或num的位数大于4,则返回-1*/ retum-1; mul=1; (2) while(m>0){ d=m%10; m= (3) ; result=result+( (4) ) *mul; mul= (5) ;} return result;}