C语言程序设计-现代方法----示例及练习题----第二章--C语言基本概念

作者: selfimpr

博客: http://blog.csdn.net/lgg201

邮箱: [e-mail]

<C语言程序设计-现代方法>----示例及练习题----第二章--C语言基本概念

声明:

部分示例代码为书中源代码.

其他原创代码多数对原题要求有所改动.

 

 

 

page9: pun.c

 

#include <stdio.h>int main() {printf("To C, or not to C: that is the question./n%.3f", 3.234666666);return 0;}

 

page 18: dweight.c

#include <stdio.h>#define CUBIC_IN_PER_LB 166int main() {int height = 0;int length = 0;int width = 0;int volume = 0;int weight = 0;/** height = 8;* length = 12;* width = 10;*/int i = 0;while(i < 5) {printf("please input height:/n");scanf("%d", &height);printf("please input width:/n");scanf("%d", &width);printf("please input length:/n");scanf("%d", &length);volume = height * length * width;weight = (volume + CUBIC_IN_PER_LB - 1) / CUBIC_IN_PER_LB;printf("Dimensions: %dx%dx%d/n", length, width, height);printf("Volume (cubic inches): %d/n", volume);printf("Dimensional weight (pounds): %d/n", weight);}return 0;}

 

page 22: celsius.c

#include <stdio.h>#define PERZING_PT 32.0#define SCALE_FACTOR (5.0 / 9.0)int main() {float fahrenheit, celsius;printf("Enter Fahrenheit temperature: ");scanf("%f", &fahrenheit);celsius = (fahrenheit - PERZING_PT) * SCALE_FACTOR;printf("Celsius equivalent: %.1f/n", celsius);return 0;}

 

练习3: 编写一个程序, 程序要使用printf在屏幕上显示出下面的图形:

        *
       *
      *
*   *
 * *
  *

#include <stdio.h>int main() { int size = 1; printf("please enter the size of this fit: "); scanf("%d", &size); int times = size * 3; int up_space_by_down = times * 2 - 1; int i = 0; for(; i < times; i ++) { int space_amount = times - i - 1 + up_space_by_down; int j = 0; for(; j < space_amount; j ++) { printf(" "); } printf("*/n"); } i = 0; for(; i < times; i ++) { int left_space_amount = i; int center_space_amount = 2 * ( times - i - 2) + 1; int j = 0; for(; j < left_space_amount; j ++) { printf(" "); } if(center_space_amount >=1) { printf("*"); } j = 0; for(; j < center_space_amount; j ++) { printf(" "); } printf("*/n"); } return 0;}

 

练习5, 7, 9: 编写一个计算球体体积的程序, 其中球体半径为10m, 参考公式v=4/3派r^3. 注意, 分数4/3应写成4.0/3.0

#include <stdio.h>#define PAI 3.14159262453897int main() { printf("please enter the ball's radii: "); int radii = 0; scanf("%d", &radii); float cubage = 4.0 / 3.0 * PAI * radii * radii * radii; printf("The ball that radii is %d, its cubage is %f", radii, cubage); return 0;}