#include <stdio.h>
#include <string.h>
#include<stdlib.h>
struct canbo{
    char tenCB[30];
    int  namsinh;
    float luong;
} a[100];
int n;

void nhap() {
    printf("Nhap so luong can bo: ");
    scanf("%d", &n);
    int i;
    for (i = 0; i < n; i++) {
        printf("Nhap ten can bo: ");
        fflush(stdin);
        gets(a[i].tenCB);
        printf("Nhap nam sinh cua can bo: ");
        scanf("%d", &a[i].namsinh);
        printf("Nhap luong cua can bo:(Don vi trieu dong): ");
        scanf("%f", &a[i].luong);
    }
}

void hienthi() {
    printf("Danh sach cac can bo: ");
    int i;
    for (i = 0; i < n; i++) {
        printf("%s\t%d\t%f\n", a[i].tenCB, a[i].namsinh,a[i].luong);
        fflush(stdout);
    }
}
void cau3() {
    printf("danh sach can bo co luong < 5 trieu: ");
    int i;
    for (i = 0; i < n; i++)
     if (a[i].luong < 5.0)
      {
        printf("%s\t%d\t%f\n", a[i].tenCB, a[i].namsinh,a[i].luong);
        fflush(stdout);
    }
}

void cau4() {
    printf("danh sach can bo co nam sinh truoc nam 1980 ");
    int i;
    for (i = 0; i < n; i++)
     if (a[i].namsinh < 1980)
      {
        printf("%s\t%d\t%f\n", a[i].tenCB, a[i].namsinh,a[i].luong);
        fflush(stdout);
    }
}
int main() {
    nhap();
    hienthi();
    cau3();
    cau4();
}