这是啥意思啊？改咋分析啊

Question

int data1;
int data2;
int data3;
void tips()
{
printf("\n");
printf("\n");
printf("\n");
printf("\n")

int main(){
printf("num:%d\n name:%s\nsex:%s\naddress:%s\nxuehao:%s", a.num, a.name, a.sex, a.addr, a.xuehao);
int data1;
int data2;
int data3;
char suanfa;
int mark = 0;
while(1)
{
tips();
if(mark != 0)
getchar();
scanf("%c",&suanfa);
getchar();
mark = 1;
switch(suanfa)

Answer 1

题目不全吧