%c按照ASCII码转换字符
例如：
#include <stdio.h>
int main(void) {
char ch;
printf("Please enter a character.\n");
scanf("%c", &ch);
printf("The code for %c is %d.\n", ch, ch);
return 0;
}
输出结果：
Please enter a character.
C
The code for C is 67.
可移植类型：stdint.h 和 inttypes.h
精确宽度整数类型（exact-width integer type）——int32_t
最小宽度类型（minimum width type）——int_least8_t
最快最小宽度类型（fastest minimum width type）——int_fast8_t
最大整数类型——intmax_t
复数与虚数
C语言有三种复数类型：float_Complex、double_Complex 和 long double_Complex
例如，float_Complex类型的变量应包含两个float类型的值，分别表示复数的实部和虚数。
C语言有三种虚数类型：float_Imaginary、double_Imaginary、long_Imaginary
利用sizeof知道当前系统的指定类型大小
int main(void) {
printf("Type int has a size of %zd bytes.\n", sizeof(int));
printf("Type char has a size of %zd bytes.\n", sizeof(char));
printf("Type long has a size of %zd bytes.\n", sizeof(long));
printf("Type short has a size of %zd bytes.\n", sizeof(short));
printf("Type long long has a size of %zd bytes.\n", sizeof(long long));
printf("Type double has a size of %zd bytes.\n", sizeof(double));
printf("Type long double has a size of %zd bytes.\n", sizeof(long double));
输出：
Type int has a size of 4 bytes.
Type char has a size of 1 bytes.
Type long has a size of 4 bytes.
Type short has a size of 2 bytes.
Type long long has a size of 8 bytes.
Type double has a size of 8 bytes.
Type long double has a size of 16 bytes.
标签：26,double,bytes,long,2022.12,printf,Type,fifth,size From： https://www.cnblogs.com/ningzj/p/17008564.html