循环中循环

            #include<stdio.h>
struct student{
    int age;
    char name[10];
}
main(void)
{
    int i,j,x;
    struct student students[50],temp;
    for(i=0;i<4;i++);{
        
        scanf("%s",students[i].name);
        scanf("%d",&students[i].age);
    }
    for(i=0;i<3;i++){
        x=i;
        for(j=i+1;j<4;j++)
        if(students[j].age<students[i].age)
            x=j;
        temp=students[x];
        students[x]=students[i];
        students[i]=temp;
    }
    printf("%d %s\n",students[i].age,students[i].name);


    return 0;

}