/* 一個修改版本 */

#include

struct student

{

int??num;

char name[10];

char sex;

char address[20];

};

struct student stu[3] = {

{000, "li lin", 'm', "103 beijing road"},

{001, "zhang fun", 'm', "130 shanghai road"},

{002, "wang min", 'f', "1010 zhongshan road"}

};

void query(void);

void modify(void);

int main(void)

{

char ch;

int i;

printf("num??? name???sex??? address\n");

for (i = 0; i < 3; i++)

printf("%5d%10s%3c%20s\n", stu[i].num, stu[i].name,

stu[i].sex, stu[i].address);

putchar('\n');

printf("do you want to query? [Y/N]\n");

scanf("%c", &ch);

putchar('\n');

if(ch != '\n')

while(getchar() != '\n')

continue;

if (ch == 'Y' || ch == 'y')

query();

printf("do you want to modify? [Y/N]\n");

scanf("%c", &ch);

putchar('\n');

if(ch != '\n')

while(getchar() != '\n')

continue;

if (ch == 'Y' || ch == 'y')

modify();

printf("Bye!\n");

getchar();

return 0;

}

void query()

{

int i, number, k;

printf("please enter numbers: ");

while(scanf("%d", &number) != 1)

{

printf("please enter numbers[integer]: ");

while(getchar() != '\n')

continue;

}

while(getchar() != '\n')

continue;

printf("num??? name??????????????? sex??? address\n");

for (i = k = 0; i < 3; i++)

{

if (number == stu[i].num)

{

printf("%-3d??? %-20s %c??? %20s\n", stu[i].num, stu[i].name,

stu[i].sex, stu[i].address);

k = 1;

}

}

if(k == 0)

printf("Not!\n");

putchar('\n');

}

void modify()

{

int modinum, k, i;

printf("please input theseat which you will modify:");

while(scanf("%d", &modinum) != 1)

{

printf("please input theseat which you will modify[integer]:");

while(getchar() != '\n')

continue;

}

while(getchar() != '\n')

continue;

for (i = k = 0; i < 3; i++ )

{

if (modinum == stu[i].num)

{

printf("Please enter num: ");

while(scanf("%d", &stu[i].num) != 1)

{

printf("Please enter num[integer]: ");

while(getchar() != '\n')

continue;

}

while(getchar() != '\n')

continue;

printf("Please enter name: ");

while(scanf("%s", stu[i].name) == 0)

{

while(getchar() != '\n')

continue;

printf("Please enter name: ");

}

while(getchar() != '\n')

continue;

do

{

printf("Please enter sex[m/f]: ");

scanf("%c",??&stu[i].sex);

while(getchar() != '\n')

continue;

}while(stu[i].sex != 'm' && stu[i].sex != 'f');

printf("Please enter address: ");

while(scanf("%s",??stu[i].address) == 0)

{

printf("Please enter address: ");

while(getchar() != '\n')

continue;

}

while(getchar() != '\n')

continue;

k = 1;

}

}

if(k == 0)

printf("Not!\n");

putchar('\n');

}

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