C语言大小写字母转换

Question

编程从键盘输入一个小写英文字母，将其转换为大写英文字母，并将转换后的大写英文字母及其十进制的ASCII码值显示到屏幕上。
输入提示信息："Please input a low-case letter from keyboard:"
输入数据格式："%c"
输出数据格式："The capital letter and its ASCII value are:%c and %d.
"
提示：从键盘输入一个字符可用scanf也可用getchar
程序运行示例：
Please input a low-case letter from keyboard:a
The capital letter and its ASCII value are:A and 65.

Answer 1

#include <stdio.h>
int main()
{
    char c;
    printf("Please input a low-case letter from keyboard:");
    scanf("%c",&c);
    c -= 32;
    printf("The capital letter and its ASCII value are:%c and %d",c,c);
    return 0;
}