#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include<windows.h>
int main()
{
	int a = 0;//數字
	int n = 0;//幾個這類數相加
	int sum = 0;//求和的結果
	int ret = 0;//儲存計算好的每一項
	int i = 0;
	printf("請輸入s和n:");
	scanf("%d %d", &a, &n);
	for (i = 0; i < n; i++)
	{
		ret = ret * 10 + a;
		sum += ret;
	}
	printf("sum=%d\n", sum);
	system("pause");
	return 0;
}

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include<math.h>
#include<windows.h>
int main()
{
	int i = 0;
	for (i = 0; i < 100000; i++)
	{	
		//判斷是否為水仙花數
		/*1.儲存該數的位數*/
		int sum = 0;
		int count = 1;
		int tmp = i;
		while (tmp /=10)
		{
			count++;
		}
		/*2.得到i的每一位，求出它的每一位次方數之和*/
		tmp = i;
		while (tmp)
		{
			sum += pow(tmp % 10, count);
			tmp/=10;
		}
		/*判斷*/
		if (sum == i)
		{
			printf("%d\t", i);
		}
	
	}
	system("pause");
	return 0;
}

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include<math.h>
#include<windows.h>
int main()
{
	int line = 0;
	scanf("%d", &line);
	int i = 0;
	for (i = 0; i < line; i++)//打印上半個菱形
	{
		int j = 0;
		for (j = 0; j < line - 1 - i; j++)//先空格
		{
			printf(" ");
		}
		for (j = 0; j < 2 * i + 1; j++)//再"*"
		{
			printf("*");
		}
		printf("\n");
	}
	for (i = 0; i < line - 1; i++)//打印下半個菱形
	{
		int j = 0;
		for (j = 0; j <=i ; j++)//先空格
		{
			printf(" ");
		}
		for (j = 0; j < 2 * (line - 1 - i) - 1; j++)//再"*"
		{
			printf("*");
		}
		printf("\n");
	}

	system("pause");
	return 0;
}

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=5;i++){
?? ?for(j=1;j<=2*5-2*i;j++)
?? ? ? ?printf(" ");?
?? ?for(j=1;j<=i*2-1;j++)
?? ??? ?printf("*");
printf("\n");
}
return 0;
}

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=5;i++){
?? ?for(j=1;j<=5-i;j++)
?? ?printf(" ");?
?? ?for(j=1;j<=i*2-1;j++)
?? ??? ?printf("*");?
? ? ? ? printf("\n");
}
return 0;
}

#include<stdio.h>
#include<math.h>
int main()
{
?? ?int i,j;
?? ?for(i=1;i<=5;i++){
?? ??? ?for(j=1;j<=abs(3-i);j++)
?? ??? ??? ?printf(" ");
?? ??? ?for(j=1;j<=(2*(3-abs(3-i))-1);j++)
?? ??? ??? ?printf("*");
?? ??? ?printf("\n");
?? ?}
?? ?return 0;
}

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=行數;i++){
? ? for(j=1;j<=第i行空格數（找規律）;j++)
? ? printf(" ");?
? ? for(j=1;j<=第i行圖形數（找規律）;j++)
? ? ? ? printf("圖形");?
printf("\n");
}
return 0;
}

#include<stdio.h>
int main()
{
int i,j;
for(i=1;i<=9;i++){
?? ?for(j=1;j<=i;j++)
?? ? ? ?printf("%d*%d=%d\t",j,i,j*i);?
printf("\n");
}
return 0;
}