听课笔记

1c编程预备计算机知识

2基本输入与函数输出

• 字符

  • 单个字符用单引号括起来：‘A’
  • 字符串用双引号括起来： “AB”

Ubuntu Pastebin 代码分享

乌本图·帕斯泰宾 (ubuntu.com)

名词翻译

中文	英文	中文	英文
整数	integer	变量	variable
字符	character	初始化	initialize
浮点数	float	十进制	decimalism
结构体	structural body	二进制	binary system
枚举	enumeration	十六进制	hexadecimal
联合	unite	打印	printf

课后习题

3.10第四题

a.表示字符类型常量，“\”表示转义
b.是一个int型数据常量
c.表示双精度浮点类型常量
d.表示十六进制int类型常量
e。双精度浮点类型常量

第六题

常量	类型	转换说明
12	int	%d
0X3	unsigned int	%#x
'C'	char	%c
2.34E07	double	%e
'\040'	char	%e
7.0	double	%f

第八题

分别填入d ld f c

3.11第一题

#include<stdio.h>
#include<float.h>
#include
int main(void) {
int big_int = 2147483647；
float big_float = 3.4e38;
float small_float = 10.0/3;
printf("The big int date is %d\n",big_int+1);
printf("The big float date is %f\n",big_float*10);
printf("The big float date is %f\n",small_float);
printf("The MAX float date is %f\n",FEL_MAX);
printf("The MAX int date is ld\n",INT_MAX);
return 0
}

第二题

#include<stdio.h>
int main (void){
int input;
printf("Enter a value of char int ASCII:");
scanf("%d",&input);
printf("You input value is %d, and char is %c\n",input,input);
return 0;
}

4.8第一题

#include<stdio.h>
int main(void){
char name [40];
char surname[40];
printf("please input your first name:");
scanf("%s",name);
printf("please input your last name:" );
scanf("%s",surname);
printf ("hello, %s ,%s.",name ,surname);
return 0;

}

第四题

#include<stdio.h>
int main() {
float heigh;
char name[40];
printf("Enter your name :");
scanf("%s",name);
printf("hi %s,how tall you are (inch):",name);
scanf("%f",&heigh);
printf("%s, you are %.3f feet tall \n",name,heigh/12.0);
return 0;
}

第七题

#include<stdio.h>
#include<float.h>
int main(void){
double d_third = 1.0/3.0;
float f_third = 1.0/3.0;
printf("float of one third(6) = %.6f\n",f_third);
printf("float of one third(12) = %.12f\n",f_third);
printf("float of one third(16) = %.16f\n",f_third);
printf("double of one third(6) = %.6lf\n",d_third);
printf("double of one third(12) = %.12lf\n",d_third);
printf("double of one third(16) = %.16lf\n",d_third);
printf("FLT_DIG in float.h is %d\n",FLT_DIG);
printf("DBL_DIG in float.h is %d\n",DBL_DIG);
return 0;
}