循环版逆序

final/readme

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+

level1/p01_runningLetter/running letter.c

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+#include<stdio.h> 
+
+#include<stdlib.h>
+
+#include <windows.h>
+
+int main()
+
+{
+
+	char c[100];
+
+	gets(c);
+
+	while(1)
+
+    {
+
+	  for(int i=1;i<=115;i++)
+
+	  {
+
+	    for(int j=1;j<i;j++)
+
+	    printf(" ");
+
+	    printf("%s",c);
+
+	    Sleep(20);
+
+	    system("CLS");
+
+	  }
+
+	  for(int k=114;k>=1;k--) 
+
+	  {
+
+	  	for(int j=1;j<=k;j++)
+
+	  	printf(" ");
+
+	  	printf("%s",c);
+
+	  	Sleep(20);
+
+	    system("CLS");
+
+	  }
+
+	}
+
+	return 0;
+
+}

level1/p01_runningLetter/running letter.cpp

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+#include<stdio.h> 
+#include<stdlib.h>
+#include <windows.h>
+int main()
+{
+	int number=115;
+	char c[100];
+	gets(c);
+	while(1)
+    {
+	  for(int i=1;i<=number;i++)
+	  {
+	    for(int j=1;j<i;j++)
+	    printf(" ");
+	    printf("%s",c);
+	    Sleep(20);
+	    system("CLS");
+	  }
+	  for(int k=number-1;k>=1;k--) 
+	  {
+	  	for(int j=1;j<=k;j++)
+	  	printf(" ");
+	  	printf("%s",c);
+	  	Sleep(20);
+	    system("CLS");
+	  }
+	}
+	return 0;
+}

level1/p02_isPrime/isprime.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+int main(int argc, char *argv[]) 
+{
+		long int num;
+    	while(scanf("%d",&num)==1)
+    	{
+			if(num==1)
+			printf("%ld��������\n",num);
+			if(num==2)
+			printf("%ld������\n",num);
+    		if(num>2)	
+		    {
+		    	int i=2;
+		    	for(;i<num;i++)
+    			{
+    		    	if(num%i==0)
+    		    	{
+    		    	    printf("%ld��������\n",num);
+    		    	    break;
+					}
+				}
+				if(i==num)
+				printf("%ld������\n",num);
+				}
+		}
+	return 0;
+}

level1/p03_Diophantus/p03.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+int main(int argc, char *argv[]) 
+{
+	int i=1;
+	for(;i<150;i++)
+		{
+			if((i%6==0)&(i%12==0)&(i%7==0))
+				{
+					int sonlife,falife,marry,sonbirth;
+					falife=i;
+					sonlife=0.5*(i-4);
+					marry=i/6+i/12+i/7;
+					sonbirth=marry+5;
+					if(sonlife=(falife-4-sonbirth))
+					printf("When his son passed away, he was %d.\n",falife-4);
+
+				}
+		}
+	return 0;
+}

level1/p04_ narcissus/p04.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+int main(int argc, char *argv[]) 
+{
+	int a,b,c; 
+	for(int i=1;;i++) 
+	{
+		if(i<100)continue;
+		if(i>999) break;
+	 	a=i/100;
+	 	b=i/10%10;
+	 	c=i%10;
+	  	if(i==(a*a*a+b*b*b+c*c*c)) printf("%d\n",i);
+	}
+	return 0;
+}

level1/p05_allPrimes/p05.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include<time.h>
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+int main(int argc, char *argv[]) 
+{
+	int i=2;
+	printf("%d\n",i);
+	for(int i=3;i<1001;i++)
+    	{
+			int j=2;
+    		for(;j<i;j++)
+    		    {
+					if(i%j==0)
+    		    	break;
+				}
+			if(j==i)printf("%d\n",i);
+		}
+	printf("%dms\n",clock());
+	return 0;
+}

level1/p06_Goldbach/p06.c

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+#include <stdio.h>
+#include <stdlib.h>
+#define maxn 100
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+int main(int argc, char *argv[]) 
+{
+	int prime[maxn];
+	prime[0]=2;
+	int count=1;
+	for(int i=3;i<maxn+1;i++)
+	{
+		int j=2;
+		for(;j<i;j++)
+		{
+			if(i%j==0)
+			break;
+		}
+		if(j==i)
+		{
+			prime[count]=i;
+			count=count+1;
+		}
+	}
+	for(int t=4;t<=maxn+1;t=t+2)
+	{
+		for(int u=0;u<count;u++)
+		{
+			for(int p=0;p<count;p++)
+			{
+				if(t==(prime[u]+prime[p])) 
+				{
+					printf("%d=%d+%d\n",t,prime[u],prime[p]);
+				}	
+			}
+		}
+	}
+	return 0;
+}

level1/p07_encrypt_decrypt/p07.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+int main(int argc, char *argv[]) 
+{
+	int c;
+	while((c=getchar())!=EOF)
+	{
+		if(c>='A'&&c<='Z')
+		c=c+2;
+		if(c>='a'&&c<='z')
+		c=c-3;
+		else c=c+4;
+		printf("%c",c);
+	}
+	return 0;
+}

level1/p07_encrypt_decrypt/p07ex.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+int main(int argc, char *argv[]) 
+{
+	int c;
+	while((c=getchar())!=EOF)
+	{
+		if(c>=67&&c<=92)
+		c=c-2;
+		if(c>=94&&c<=119)
+		c=c+3;
+		else c=c-4;
+		printf("%c",c);
+	 } 
+	return 0;
+}

level1/p08_hanoi/p08.c

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+#include <stdio.h>
+#include <stdlib.h>
+
+/* run this program using the console pauser or add your own getch, system("pause") or input loop */
+
+void move (int n, char a, char b, char c)
+{ 
+	if (n == 1) 
+	{ 
+		printf("%c-->%c\n",a,c);
+	 } 
+	else 
+	{ 
+		move (n-1,a,c,b); 
+		printf("%c-->%c\n",a,c);
+		move (n-1,b,a,c);
+	 } 
+} 
+
+int main(int argc, char *argv[]) 
+{
+	int n;
+	scanf("%d",&n);
+	move(n,'A','B','C');
+	return 0;
+}