C 中格式說明符用於輸入和輸出目的。使用這個概念，編譯器可以了解在使用 scanf() 函數取得輸入並使用 printf() 函數列印期間變數中的資料類型。以下是格式說明符的清單。
| #類型 | |
|---|---|
| # %c | |
| %d | |
| %e 或%E | |
| %f | |
| %g或%G | |
| %hi | |
| %hu | |
| %i | |
| %l 或%ld 或% li | |
| %lf | |
| %Lf | |
| %lu | |
| %lli 或%lld | |
| %llu | |
| %o | |
| #%p | |
| %s | |
| %u | |
| %x 或%X | |
| %n |
列印%字元
#include <stdio.h>
main() {
char ch = 'B';
printf("%c</p><p>", ch); //printing character data
//print decimal or integer data with d and i
int x = 45, y = 90;
printf("%d</p><p>", x);
printf("%i</p><p>", y);
float f = 12.67;
printf("%f</p><p>", f); //print float value
printf("%e</p><p>", f); //print in scientific notation
int a = 67;
printf("%o</p><p>", a); //print in octal format
printf("%x</p><p>", a); //print in hex format
char str[] = "Hello World";
printf("%s</p><p>", str);
printf("%20s</p><p>", str); //shift to the right 20 characters including the string
printf("%-20s</p><p>", str); //left align
printf("%20.5s</p><p>", str); //shift to the right 20 characters including the string, and print string up to 5 character
printf("%-20.5s</p><p>", str); //left align and print string up to 5 character
}B 45 90 12.670000 1.267000e+001 103 43 Hello World Hello World Hello World Hello Hello
以上是在C語言中的格式說明符的詳細內容。更多資訊請關注PHP中文網其他相關文章！
