学一下c语言的string库isalpha,toupper,tolower就行了
#include <stdio.h>
#include <ctype.h>
#include <string.h>
void solve() {
char str[1001];
char ans[1001];
scanf("%s", str);
int p = -1;
int ans_index = 0;
for (int i = 0; str[i] != '\0'; i++) {
if (isalpha(str[i])) {//判断特殊分割符号
if (p == -1) {
p = 0;
ans[ans_index++] = toupper(str[i]);
} else {
ans[ans_index++] = tolower(str[i]);
}
} else {
p = -1;
}
}
ans[ans_index] = '\0';
printf("%s\n", ans);
}
int main() {
int t = 1;
scanf("%d", &t);
while (t--) {
solve();
}
return 0;
}