题解 | #大小写转换#
大小写转换
https://www.nowcoder.com/practice/4e089ee8966a4ed4b306f64e68d45264
#include <stdio.h>
int main() {
char ch = 0;
while ((ch = getchar()) != EOF) {
getchar();
if ((ch >= 'A') && (ch <= 'Z')) {
putchar(ch + 32);
} else if ((ch >= 'a') && (ch <= 'z')) {
putchar(ch - 32);
}
printf("\n");
}
return 0;
}
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