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What is the input and output
Enter: "Mirror mirror tell me who the most beautiful in the world"
Output: "Snow White"
C programming, we will tell the program to their needs by calling the input function; by calling the output function, the program run results are displayed.
Using the input and output functions in the C standard library
It should include the header file stdio.h
#include <stdio.h>Formatted output
The basic use of printf:
The first parameter is the format string, a percent represents the type of format to be formatted. Each symbol corresponds to a percent control of a subsequent parameter.
- % D decimal output
- Hexadecimal output% x,% X
- % F floating point output
- ASCII character output% c
- % S output string
Other formatted output control character
- Unsigned number% u
- Pointer address% p
#include <stdio.h>
int main(int argc, char* argv[])
{
//1. %d 十进制
printf("%d\r\n", 100);
//2. %X 十六进制
printf("%X\r\n", 100); // 十六进制的 64
printf("%X, %x\r\n", 11, 11);
//3. %f 输出浮点数（小数）
printf("%f\r\n", 3.1415926);
//4. %c 是ASCII码对应的形式输出
printf("%d, %c\r\n", 65, 65);
//5. %s 以字符串形式输出
printf("Your name is: %s\r\n", "LiSi");
//6. %u 无符号形式输出（没有负数）
printf("%d, %u\r\n", 0xFFFFFFFF, 0xFFFFFFFF);
//7. %p 以指针形式输出
printf("%p\r\n", 100);
return 0;
}