N04.练习

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#include <stdio.h>
int main(void)
{
	int length, width, height;
	float volume, weight;
	printf("Length:%d\n", length);
	printf("Width:%d\n", width);
	printf("Height:%d\n", height);
	
	printf("Volume:%f\n", volume);
	printf("Weight:%.2f\n", weight);
	
	return 0;
}

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#include <stdio.h>
int main(void)
{
	int amount, twentyDollar, tenDollar, fiveDollar;
	printf("请输入金额：");
	scanf("%d", &amount);
	printf("20美元数量：%d\n", amount / 20);
	twentyDollar = amount / 20;
	printf("10美元数量：%d\n", (amount - twentyDollar * 20) / 10);
	tenDollar = (amount - twentyDollar * 20) / 10;
	printf("5美元数量：%d\n", (amount - twentyDollar * 20 - tenDollar * 10) / 5);
	fiveDollar = (amount - twentyDollar * 20 - tenDollar * 10) / 5;
	printf("1美元数量：%d\n", amount - twentyDollar * 20 - tenDollar * 10 - fiveDollar * 5);
	
	return 0;
}

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// 将华氏温度转换为摄氏温度
// 华氏温度 = 摄氏温度 * 9 / 5 + 32

#include <stdio.h>
#define FREEZING_PT 32.0f
#define SCALE_FACTOR (5.0f / 9.0f)

int main(void)
{
	float fahrenheit, celsius;
	printf("请输入华氏温度：");
	scanf("%f", &fahrenheit);
	celsius = (fahrenheit - FREEZING_PT) * SCALE_FACTOR;
	printf("摄氏温度为：%.1f\n", celsius);
	return 0;
 } 

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#include <stdio.h>
int main(void)
{
	int length = 8, width = 10, height = 12, volume;
	volume = length * width * height;
	printf("面积计算：%d*%d*%d\n", length, width, height);
	printf("面积为：%d\n", volume);
	printf("体积重量为：%d\n", (volume + 165) / 166);
	return 0;
}

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#include <stdio.h>

#define TAX 0.05f
int main(void)
{
	float amount, taxAdded;
	printf("请输入金额：", amount);
	scanf("%f", &amount);
	taxAdded = amount + amount * TAX;
	printf("税后应付：%.2f\n", taxAdded);
	return 0;
}

//int main(void)
//{
//	float amount, taxAdded;
//	printf("请输入金额：", amount);
//	scanf("%f", &amount);
//	taxAdded = amount * 1.05f;
//	printf("税后应付：%.2f\n", taxAdded);
//	return 0;
//}

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#include <stdio.h>
int main(void)
{
	printf("       *\n");
	printf("      *\n");
	printf("     *\n");
	printf("*   *\n");
	printf(" * *\n");
	printf("  *\n");
	return 0;
}

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//#include <stdio.h>
//int main(void)
//{
//	int radius = 10;
//	float volume = 4.0f / 3.0f * 3.14 * radius * radius * radius;
//	printf("球的体积为：%.1f\n", volume);
//	return 0;	
//}

#include <stdio.h>
int main(void)
{
	int radius;
	printf("请输入半径：");
	scanf("%d", &radius);
	float volume = 4.0f / 3.0f * 3.14 * radius * radius * radius;
	printf("体积为：%.1f", volume);
	return 0;	
}

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#include <stdio.h>
#define INCHES_PER_POUND 166

int main(void)
{
	int length, width, height, volume, weight;
	printf("请输入长度：");
	scanf("%d", &length);
	printf("请输入宽度：");
	scanf("%d", &width);
	printf("请输入高度：");
	scanf("%d", &height);
	volume = length * width * height;
	weight = (volume + INCHES_PER_POUND - 1) / 166;
	printf("体积为：%d\n", volume);
	printf("体积重量为：%d\n", weight);
	return 0; 
}