信息学奥赛一本通 1.5：数组(1)

​第一部分 C++语言

第五章 数组

第一节 一维数组

1102 与指定数字相同的数的个数

#include <iostream>
using namespace std;

int main() {
    int n, m, a[105], cnt = 0;
    cin >> n;

    for (int i = 0; i < n; i ++ ) cin >> a[i];

    cin >> m;

    for (int i = 0; i < n; i ++ ) {
        if (a[i] == m) cnt ++;
    }

    cout << cnt << endl;

    return 0;
}

1103 陶陶摘苹果

#include <iostream>
using namespace std;

int main() {
    int a[10], h, cnt = 0;

    for (int i = 0; i < 10; i ++ ) cin >> a[i];

    cin >> h;

    for (int i = 0; i < 10; i ++ ) {
        if (h + 30 >= a[i]) cnt ++;
    }

    cout << cnt << endl;

    return 0;
}

1104 计算书费

#include <cstdio>
using namespace std;

int main() {
    int qty;
    double ttl, price[10] = {28.9, 32.7, 45.6, 78, 35, 86.2, 27.8, 43, 56, 65};

    for (int i = 0; i < 10; i ++ ) {
        scanf("%d", &qty);
        ttl += price[i] * qty;
    }

    printf("%.1lf", ttl);

    return 0;
}

1105 数组逆序重存放

#include <iostream>
using namespace std;

int main() {
    int n, a[105];

    cin >> n;

    for (int i = 1; i <= n; i ++ ) cin >> a[i];

    for (int i = n; i >= 1; i -- ) cout << a[i] << ' ';

    return 0;
}

1106 年龄与疾病

#include <cstdio>
using namespace std;

int main() {
    int n, age, c[4] = {};

    scanf("%d", &n);

    for (int i = 0; i < n; i ++