作业

c2_1.1.4

@@ -0,0 +1,20 @@
+#include <stdio.h>
+void printf_X(int a);
+void main()
+{
+	int i, j;
+	for (i = 1; i <= 9; i++)
+	{
+		printf_X(i);
+		printf("\n");
+	}
+}
+
+void printf_X(int a)
+{
+	int j;
+	for (j = 1; j <= a; j++)
+	{
+		printf("%dX%d=%d\t", a, j, a*j);
+	}
+}

practices/ c/ level0/c0.c

@@ -0,0 +1,5 @@
+#include <stdio.h>
+void main()
+{
+	printf("Hello,world!我是陈叔炜");
+}

practices/ c/ level0/c1_1.c

@@ -0,0 +1,21 @@
+#include <stdio.h>
+int main()
+{
+	int a;
+	printf("请输入一个数");
+	scanf("%d", &a);
+	if (a > 0)
+	{
+		printf("这个数是正数");
+	}
+	else if (a != 0)
+	{
+		printf("这个数是负数");
+	}
+	else printf("这个数既不是正数也不是负数");
+	if (0 == a % 2)
+	{
+		printf("这个数是偶数");
+	}
+	else printf("这个数是奇数");
+}

practices/ c/ level0/c1_2.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+int main()
+{
+	int a;
+	printf("请输入一个数");
+	scanf("%d", &a);
+	if (0 == a % 13)
+	{
+		printf("这个数是13的倍数");
+	}
+	else
+		printf("这个数不是13的倍数");
+}

practices/ c/ level0/c1_3.c

@@ -0,0 +1,11 @@
+#include <stdio.h>
+int main()
+{
+	int a;
+	printf("请输入年数");
+	scanf("%d", &a);
+	if ((0 == a % 4 && 0 != a % 100) || 0 == a % 400)
+		printf("这一年是闰年");
+	else
+		printf("这一年不是闰年");
+}

practices/ c/ level0/c1_5.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+int main()
+{
+	int a, b, c;
+	printf("请输入三个数");
+	scanf("%d%d%d", &a, &b, &c);
+	if (a > b)
+	{
+		if (c > a)
+			a = c;
+	}
+	else
+	{
+		if (b > c)
+			a = b;
+		else
+			a = c;
+	}
+	printf("这三个数中最大的是%d", a);
+}

practices/ c/ level0/c1_6.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+int main()
+{
+	int i,n,max_number=0;
+	printf("请输入要比较的数的个数");
+	scanf("%d", &n);
+	int number;
+	for (i = 0; i < n; i++)
+	{
+		scanf("%d", &number);
+		if (number > max_number)
+		{
+			max_number = number;
+		}
+	}
+	printf("这n个数中最大的数是%d", max_number);
+}

practices/ c/ level0/c2_1.1.1.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+int main()
+{
+	int i;
+	for (i = 2; i <= 200; i++)
+	{
+		if (0 == i % 2)
+		{
+			printf("%d\t", i);
+		}
+	}
+}

practices/ c/ level0/c2_1.1.2.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+int main()
+{
+	int i;
+	for (i = 1; i <= 100; i++)
+	{
+		if ((0 == i % 3) && (0 != i % 5))
+		{
+			printf("%d\t", i);
+		}
+	}
+}

practices/ c/ level0/c2_1.1.3.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+void main()
+{
+	int i, sum = 0;
+	for (i = 1; i <= 100; i++)
+	{
+		if ((0 == i % 7) || (7 == i % 10))
+		{
+			printf("%d\t", i);
+			sum += i;
+		}
+	}
+}

practices/ c/ level0/c2_1.c

@@ -0,0 +1,11 @@
+#include <stdio.h>
+#include <windows.h>
+void main()
+{
+	int i,t=50;
+	for (i = 0; i < 10000; i++)
+	{
+		printf("你好");
+		Sleep(t);
+	}
+}

practices/ c/ level0/c2_2.c

@@ -0,0 +1,13 @@
+#include <stdio.h>
+void main()
+{
+	system("color 0a");
+	while (1)
+	{
+		printf("0 1");
+	}
+}
+//结果分析
+//结果：屏幕无限制打印绿色字体的‘0’、‘1’
+//system ("color 0a")使字体变绿
+//while 语句条件表达式为1，代表真，无限执行循环“打印绿色字体0 1”

practices/ c/ level1/ font-font- p10_pushBoxes/ font/pushbox.c

@@ -0,0 +1,117 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<conio.h>
+#define SIZE 9
+int intmaze[SIZE][SIZE]; 
+void print_map();
+void scanfmap();
+void move(int nn);
+void main()
+{
+	scanfmap();
+	move(SIZE);
+	system("pause");
+}
+
+void scanfmap()
+{
+	FILE *p;
+	p =fopen("level1.txt", "r");
+	for (int i = 0; i < SIZE; i++) {
+		for (int j= 0; j < SIZE; j++) {
+			fscanf(p, "%d", &intmaze[i][j]);
+		}
+	}
+	fclose(p);
+}
+void print_map()
+{
+	for (int i = 0; i < SIZE; i++) {
+		for (int j = 0; j < SIZE; j++) {
+			if (intmaze[i][j] == 0) {
+				intmaze[i][j] = ' ';		//空格
+			}if (intmaze[i][j] == 1) {
+				intmaze[i][j] = '*';		//墙壁
+			}if (intmaze[i][j] == 9) {
+				intmaze[i][j] = 'P';		//人
+			}if (intmaze[i][j]== 2) {
+				intmaze[i][j] = '@';		//目的地;
+			}if (intmaze[i][j]== 3) {
+				intmaze[i][j] = '#';		//箱子
+			}
+		}
+	}
+	for (int i = 0; i < SIZE; i++) {
+		for (int j = 0; j < SIZE; j++) {
+			printf("%c", intmaze[i][j]);
+		}
+		printf("\n");
+	}
+}
+
+void move(int nn)
+{
+	int x = 4, y = 4;
+	char walk;
+	while (1) {
+		print_map();
+		walk = _getch();
+		if (walk == 'w') {
+			if ((intmaze[x - 1][y] == ' ') && (x>0)) {
+				intmaze[x - 1][y] = 9;
+				intmaze[x][y] = 0;
+				x--;
+			}
+			else if ((intmaze[x - 1][y] == '#') && (intmaze[x - 2][y] != '*') && (x > 1)) {
+				intmaze[x - 1][y] = 9;
+				intmaze[x - 2][y] = 3;
+				intmaze[x][y] = 0;
+				x--;
+			}
+		}
+		if (walk == 's') {
+			if ((intmaze[x + 1][y] == ' ') && (x < nn - 1)) {
+				intmaze[x + 1][y] = 9;
+				intmaze[x][y] = 0;
+				x++;
+			}
+			else if ((intmaze[x + 1][y] == '#') && (intmaze[x + 2][y] != '*') && (x < nn - 2)) {
+				intmaze[x + 1][y] = 9;
+				intmaze[x + 2][y] = 3;
+				intmaze[x][y] = 0;
+				x++;
+			}
+		}
+		if (walk == 'a'){
+			if ((intmaze[x][y - 1] == ' ') && (y > 0)) {
+				intmaze[x][y - 1] = 9;
+				intmaze[x][y] = 0;
+				y--;
+			}
+			else if ((intmaze[x][y - 1] == '#') && (intmaze[x][y - 2] != '*') && (y>1)) {
+				intmaze[x][y - 1] = 9;
+				intmaze[x][y - 2] = 3;
+				intmaze[x][y] = 0;
+				y--;
+			}
+	}
+		if (walk == 'd') {
+			if ((intmaze[x][y + 1] == ' ') && (y < nn - 1)) {
+				intmaze[x][y + 1] = 9;
+				intmaze[x][y] = 0;
+				y++;
+			}
+			else if ((walk == 'd') && (intmaze[x][y + 1] == '#') && (intmaze[x][y + 2] != '*') && (y < nn - 2)) {
+				intmaze[x][y + 1] = 9;
+				intmaze[x][y + 2] = 3;
+				intmaze[x][y] = 0;
+				y++;
+			}
+		}
+		system("cls");
+		if (intmaze[1][4] != '@' && intmaze[4][1] != '@' && intmaze[7][4] != '@' && intmaze[4][7] != '@') {
+			printf("YOU WIN\n");
+			break;
+		}
+	}
+}

practices/ c/ level1/ p01_runningLetter/runningletter.c

@@ -0,0 +1,26 @@
+#include<stdio.h>
+#include<windows.h>
+int for_back_word(int a);
+const int n = 120;
+int main()
+{
+	int i;
+	for (i = 1; i < n; i++) {
+		for_back_word(i);
+	}
+	for (i; i > 0; i--) {
+		for_back_word(i);
+	}
+	return 0;
+}
+
+int for_back_word(int a)
+{
+	int j,m=100;
+	for (j = 1; j < a; j++) {
+		printf(" ");
+	}
+	printf("R");
+	Sleep(m);
+	system("cls");
+}

practices/ c/ level1/ p02_isPrime/isprime.c

@@ -0,0 +1,35 @@
+#include<stdio.h>
+#include<math.h>
+int is_prime(int a);
+int main()
+{
+	int x;
+	scanf_s("%d", &x);
+	if (is_prime(x)) {
+		printf("%d is a prime", x);
+	}
+	else {
+		printf("%d is not a prime", x);
+	}
+	return 0;
+}
+
+int is_prime(int a)
+{
+	int k;
+	if (a == 1) {
+		return 0;
+	}if (a == 2) {
+		return 1;
+	}if (a > 2) {
+		for (k = 2; k <= sqrt(a); k++) {
+			if (a%k == 0) {
+				return 0;
+				break;
+			}
+			else {
+				return 1;
+			}
+		}
+	}
+}

practices/ c/ level1/ p03_Diophantus/Diophants.c

@@ -0,0 +1,11 @@
+#include<stdio.h>
+int main()
+{
+	int x;
+	for (x = 1; x <= 150; x++) {
+		if (x*(1 / 6.0 + 1 / 7.0 + 1 / 12.0) + 5 + x / 2.0 + 4 == x) {
+			printf("%d", x-4);
+		}
+	}
+	return 0;
+}

practices/ c/ level1/ p03_Diophantus/Diophantus.c

@@ -0,0 +1,11 @@
+#include<stdio.h>
+int main()
+{
+	int x;
+	for (x = 1; x <= 150; x++) {
+		if (x*(1 / 6.0 + 1 / 7.0 + 1 / 12.0) + 5 + x / 2.0 + 4 == x) {
+			printf("%d", x-4);
+		}
+	}
+	return 0;
+}