ruuning letter 完成

level1/p01_runningLetter/level1_1.c

@@ -0,0 +1,32 @@
+#include<stdio.h>
+#include<stdlib.h>
+#include<windows.h>
+#define WIDTH 20
+int main()
+{
+	int x,y,z,s,w;
+	char a[WIDTH];
+	for(x=1;x<=100;x++)
+
+	{
+	if (x%2==1)
+	    {
+		w=1;	
+		}
+	else
+		{
+		w=-1;
+		}
+	{for(y=WIDTH*(1-w)/2;y!=WIDTH*(1+w)/2;y+=w)
+		{for(z=0;z<y;z++)			
+			{
+			putchar(' ');
+		    }
+		printf("%c\n",'A');
+		Sleep(100);
+		system("cls");	
+		}
+	}
+
+	}
+}

level1/p02_isPrime/level1_2.c

@@ -0,0 +1,25 @@
+#include<stdio.h>
+#include<math.h>
+int main()
+{
+	int x,y,z,w;
+	w=0;
+	printf("Plesse input a integer:\n");
+	scanf("%d",&x);
+	y=sqrt(x);
+	for(z=2;z<=y;z++)
+	{
+		if((x/z*z)==x)
+		w=1;	
+	}
+
+	if(w!=0)
+	{
+		printf("%d is not prime\n",x);
+	}
+	else
+	{
+		printf("%d is prime\n",x);
+ 	}
+    return 0;
+}

level1/p03_Diophantus/level1_3.c

@@ -0,0 +1,11 @@
+#include<stdio.h>
+int main()
+{
+	float x;
+	for(x=4;x<200;x++)
+	if(x/6+x/12+x/7+5+x/2+4==x)
+	{
+		printf("age=%.0f\n",x);
+	}
+	return 0;
+}

level1/p04_ narcissus/level1_4.c

@@ -0,0 +1,17 @@
+#include<stdio.h>
+int main()
+{
+	int x,a,b,c;
+	printf("Narcissistic numbes between 100~999 are as follows:");
+	for(x=100;x<=999;x++)
+	{
+		a=x/100;
+		b=(x-a*100)/10;
+		c=x%10;
+		if(a*a*a+b*b*b+c*c*c==x)
+		{
+			printf(" %d",x);
+		}	
+	}
+	return 0;
+}