为什么在循环中跳过get（）？

Question

当我调试程序启动时没有语法错误我选择新学生并告诉我学生ID我把它然后程序转到姓氏而不让我写第一个名字和这个截图[http://www.mediafire.com/view/f2m3kcdx2xv0fdp/Capture.PNG]

#include <stdio.h>
#include <stdlib.h>
struct StudentRecord{
        int id;
        char fname[15];
        char lname[15];
        struct studentaddres
        {
            char city[15],street[15],number[15];
        }addres[2];

    }student[2];


int main()
{
    printf("1:Enter New Student\n2:Remove Student\n3:Search\n4:Sort\n5:Exit\n");
    int x,i;
    scanf("%d",&x);
    switch(x)
    {
    case 1:
        {
            for(i=0;i<2;i++)
        {
            printf("\nEnter Student %d Id:",i+1);
            scanf("%d",&student[i].id);
            printf("\nEnter Student %d First name:",i+1);
            gets(student[i].fname);
            printf("\nEnter Student %d Last name:",i+1);
            gets(student[i].lname);
            printf("\nEnter Student %d City:",i+1);
            gets(student[i].addres[i].city);
            printf("\nEnter Student %d Street:",i+1);
            gets(student[i].addres[i].street);
            printf("\nEnter Student %d Street Number:",i+1);
            gets(student[i].addres[i].number);
        }
         break;
        }
    }

}