C语言学习笔记一

/*  HELLO.C -- Hello, world */#include "stdio.h"#include "conio.h"main(){    float x = 3.2e10;    char a = 'a';   /*注意对字符的赋值是单引号*/    unsigned n;    int m;    int i = 10;    /*枚举类型是给每个元素从0到n来给每个元素赋值的，打印出来的东西是整形的    枚举类型的使用本身是为了某些逻辑结构的运算*/    enum day {Monday,Tuesday,Wednesday,Thursday,Friday,Sunday,Saturday};    enum day fir_day,end_day;    fir_day = Tuesday;    end_day = Sunday;    printf("%d\n",fir_day);    printf("char a = %d\n",a);    printf("char a = %c\n",a);    printf("Hello, world%10.5f\n",x);    /*-------注意C语言中变量的声明放在首部----------------------*/    ?*从键盘输入数据，注意取的是变量的地址*/      scanf("%d",&m);      printf("Input word is %d",m);    n = i;    printf("%d\n",n);    getch();}