实验四数组应用编程

#include <stdio.h>
#include<stdlib.h>
#define N 4
int main() {

int a[N] = {1, 9, 8, 4};
char b[N] = {'1', '9', '8', '4'};
int i;
printf("sizeof(int) = %d\n", sizeof(int));
printf("sizeof(char) = %d\n", sizeof(char));
printf("\n");
// 输出一维int数组a中每个元素的地址、值
for (i = 0; i < N; ++i)
printf("%p: %d\n", &a[i], a[i]);
printf("\n");
// 输出一维char数组b中每个元素的地址、值
for (i = 0; i < N; ++i)
printf("%p: %c\n", &b[i], b[i]);
printf("\n");
// 输出数组名a和b对应的值
printf("a = %p\n", a);
printf("b = %p\n", b);
system("pause");
return 0;
}

#include <stdio.h>
#include<stdlib.h>
#define N 2
#define M 4
int main() {
    int a[N][M] = { {1, 9, 8, 4}, {2, 0, 2, 2} };
    char b[N][M] = { {'1', '9', '8', '4'}, {'2', '0', '2', '2'} };
    int i, j;
    // 输出二维数组a中每个元素的地址和值
    for (i = 0; i < N; ++i)
        for (j = 0; j < M; ++j)
            printf("%p: %d\n", &a[i][j], a[i][j]);

    printf("\n");
    // 输出二维数组a中每个元素的地址和值
    for (i = 0; i < N; ++i)
        for (j = 0; j < M; ++j)
            printf("%p: %c\n", &b[i][j], b[i][j]);
    system("pause");
    return 0;
}

#include <stdio.h>
#define N 13
int days_of_year(int year, int month, int day);
int main() {
    int year, month, day;
    int days;
    while (scanf_s("%d%d%d", &year, &month, &day) != EOF) {
        days = days_of_year(year, month, day);
        printf("%4d-%02d-%02d是这一年的第%d天.\n\n", year, month, day, days);
    }
    return 0;
}
int days_of_year(int year, int month, int day) {
    int days = 0, ans;
    int a[N] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
    for (int i = 1; i < month; i++) {
        if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
            a[2] = 29;
        }
        days = days + a[i];

    }ans = days + day;
    return ans;
}

#include<stdio.h>
#include<stdlib.h>
#define N 5
// 函数声明
void input(int x[], int n);
void output(int x[], int n);
double average(int x[], int n);
void bubble_sort(int x[], int n);

int main() {
    int scores[N];
    double ave;
    printf("录入%d个分数:\n", N);
    input(scores, N);
    printf("\n输出课程分数: \n");
    output(scores, N);
    printf("\n课程分数处理: 计算均分、排序...\n");
    ave = average(scores, N);
    bubble_sort(scores, N);
    printf("\n输出课程均分: %.2f\n", ave);
    printf("\n输出课程分数(高->低):\n");
    output(scores, N);
    system("pause");
    return 0;
}
// 函数定义
// 输入n个整数保存到整型数组x中
void input(int x[], int n) {
    int i;
    for (i = 0; i < n; ++i)
        scanf_s("%d", &x[i]);
}
// 输出整型数组x中n个元素
void output(int x[], int n) {
    int i;
    for (i = 0; i < n; ++i)
        printf("%d ", x[i]);
    printf("\n");
}
double average(int x[], int n) {
    int sum = 0; double ans;
    int i;
    for (i = 0; i < n; i++) {
        sum = sum + x[i];
    }
    ans = 1.0 * sum / n;
    return ans;
}
void bubble_sort(int x[], int n) {
    int t;
    for (int j = 0; j < n; j++) {
        for (int i = 0; i < n - j - 1; i++) {
            if (x[i] < x[i + 1]) {
                t = x[i];
                x[i] = x[i + 1];
                x[i + 1] = t;

            }
        }
    }

}

#include <stdio.h>
#define N 100
void dec2n(int x, int n); // 函数声明
int main() {
    int x;
    printf("输入一个十进制整数: ");
    while (scanf_s("%d", &x) != EOF) {
        dec2n(x, 2); // 函数调用: 把x转换成二进制输出
        printf("\n");
        dec2n(x, 8); // 函数调用: 把x转换成八进制输出
        printf("\n");
        dec2n(x, 16); // 函数调用: 把x转换成十六进制输出
        printf("\n");
        printf("\n输入一个十进制整数: ");
    }
    return 0;
}
void dec2n(int x, int n) {
    char c[100] = { 0 };
    int i = 0, z;
    char y[17] = { '0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F' };
    while (x != 0) {
        z = x % n;
        c[i++] = y[z];
        x /= n;
    }i--;
    while (i >= 0) {
        printf("%c", c[i]);
        i--;
    }
    return;
}

#include <stdio.h>
#define N 100
// 函数声明
void func(int x[][N], int n); // 注意:两维数组作为形参的语法
void output(int x[][N], int n); // 注意:两维数组作为形参的语法
int main() {
    int x[N][N];
    int i, j, n;
    printf("Enter n: ");
    while (scanf_s("%d", &n) != EOF) {
        func(x, n); // 注意:两维数组作为实参的语法
        output(x, n); // 注意:两维数组作为实参的语法
        printf("\nEnter n: ");
    }
    return 0;
}
// 函数定义
// 功能:输出两维数组x中的数据,数据项n行、n列
void output(int x[][N], int n) {
    int i, j;
    for (i = 0; i < n; ++i) {
        for (j = 0; j < n; ++j)
            printf("%5d", x[i][j]);
        printf("\n");
    }
}
// 函数定义
// 功能:生成n行n列的左上拐矩阵,保存在两维数组x中
void func(int x[][N], int n) {
    int i, j;
    for (i = n - 1; i >= 0; i--) {
        for (j = n - 1; j >= 0; j--) {
            x[i][j] = i + 1;
            x[j][i] = x[i][j];
        }
    }
}

#include<stdio.h>
#include<string.h>
#include<stdlib.h>

#define N 80

int main() {
    char views1[N] = "hey, c, I have not love you yet.";
    char views2[N] = "hey, c, how can I love you?";
    char t[N];

    printf("交换前:\n");
    printf("views1:  %s\n",views1);
    printf("views2:  %s\n",views2);

    //交换
    strcpy(t, views1);
    strcpy(views1, views2);
    strcpy(views2, t);

    printf("交换后:\n");
    printf("views1: %s\n",views1);
    printf("views2: %s\n",views2);
    system("pause");

    return 0;
}

#include <stdio.h>
#include <string.h>
#include<stdlib.h>
#define N 5
#define M 20
void bubble_sort(char str[][M], int n); // 函数声明
int main() {
    char name[][M] = { "Bob", "Bill", "Joseph", "Taylor", "George" };
    int i;
    printf("输出初始名单:\n");
    for (i = 0; i < N; i++)
        printf("%s\n", name[i]);
    printf("\n排序中...\n");
    bubble_sort(name, N); // 函数调用
    printf("\n按字典序输出名单:\n");
    for (i = 0; i < N; i++)
        printf("%s\n", name[i]);
    system("pause");

    return 0;
}

//函数定义
//功能:使用冒泡排序法对二维数据str中的n个字符串按字典序排序
void bubble_sort(char str[][M], int n) {
       int i,j;
    char x[100];
    for(j=0;j<N-1;j++)
    for(i=0;i<N-j-1;i++)
    if(strcmp(str[i],str[i+1])>0)
    {
        strcpy(x,str[i]);
        strcpy(str[i],str[i+1]);
        strcpy(str[i+1],x);
    }
}  

 

posted @ 2022-11-29 12:52  lx娃哈哈  阅读(5)  评论(0编辑  收藏  举报