1. 數(shù)據(jù)類型
//數(shù)據(jù)類型
printf("%zu \t 打印字符%c \n",sizeof(char),'x' );//字符數(shù)據(jù)類型 占用1個字節(jié)
printf("%zu\t 打印短整型%d \n" ,sizeof(short),1); //短整型 2
printf("%zu\t 打印整形%d \n",sizeof(int),123); //整形 4
printf("%zu\t 打印長整型%d \n",sizeof(long),132323232); //長整型 8
printf("%zu\t 打印更長的整形%d \n",sizeof(long long),123344444); //更長的整形 8
printf("%zu\t 打印浮點型%.2f \n",sizeof(float),3.1); //單精度浮點數(shù) 4
printf("%zu\t 打印浮點型%lf \n",sizeof(double),3.1415); //雙精度浮點數(shù) 8
printf("打印字符串%s \n","xxdss");
2. 常量
//1.const
const float pai = 3.13;
// pai = 3.14; //const修飾不可修改
//2.define
#define Max 150
printf("最大值 %d\n",Max);
3.字符串
//字符串的結(jié)束符為\0,"hello world"中末尾自動加的\0
char arr1[] = "hello";
char arr2[] = {'h','e','l','l','o'};
char arr3[] = {'h','e','l','l','o','\0'};
printf("%s\n",arr2);
printf("%s\n",arr1);
printf("%s\n",arr3);
4.轉(zhuǎn)義字符
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