题解 | 大小写转换
大小写转换
https://www.nowcoder.com/practice/4e089ee8966a4ed4b306f64e68d45264
#include <stdio.h>
int main() {
char ch1, ch2,ch3;
char c;
scanf("%c\n%c\n%c", &ch1, &ch2,&ch3);
// 循环读取字符，直到遇到换行符或文件结束符
while ((c = getchar()) != '\n' && c != EOF) {
putchar(c); // 打印读取的字符（非换行符）
}
ch1 = ch1 + 32;
ch2 = ch2 + 32;
ch3 = ch3 + 32;
printf("%c\n%c\n%c", ch1,ch2,ch3);
return 0;
}
