# C 程序：查找字符的 ASCII 值 > 原文： [https://beginnersbook.com/2017/09/c-program-to-find-ascii-value-of-a-character/](https://beginnersbook.com/2017/09/c-program-to-find-ascii-value-of-a-character/) ASCII 值將英文字符表示為數字，每個字母分配一個 0 到 127 之間的數字。例如，大寫`Q`的 ASCII 值為 81。 ## 示例 1：顯示用戶輸入的字符的 ASCII 值的程序 該程序獲取用戶輸入的字符并顯示其 ASCII 值。 ```c #include <stdio.h> int main() { char ch; printf("Enter any character:"); /* Reads the entered character and stores it * into the char variable ch */ scanf("%c", &ch); /* Using the format specifiers we can get the ASCII code * of a character. When we use %d format specifier for a * char variable then it displays the ASCII value of a char */ printf("ASCII value of character %c is: %d", ch, ch); return 0; } ``` 輸出： ```c Enter any character:Q ASCII value of character Q is: 81 ``` 查看相關的 [C 程序](https://beginnersbook.com/2015/02/simple-c-programs/)： 1. [C 程序：展示斐波那契序列](https://beginnersbook.com/2014/06/c-program-to-display-fibonacci-series/) 2. [C 程序：檢查數字是偶數還是奇數](https://beginnersbook.com/2015/02/c-program-to-check-if-number-is-even-or-odd/) 3. [C 程序：計算并打印 nPr 的值](https://beginnersbook.com/2015/02/c-program-to-calculate-and-print-the-value-of-npr/) 4. [C 程序：將大寫字符串轉換為小寫](https://beginnersbook.com/2015/02/c-program-to-convert-uppercase-string-to-lowercase-string/)