getchar()用法

#include<stdio.h>

#include<string.h>

int main(){

char s[40];

int n,m;

scanf("%d", &m);

getchar();

while (m--){

gets(s);

n = strlen(s);

for (int i = n - 1; i >= 0; i--){

if (s[i] == ' ' || (s[i] >= '0' && s[i] <= '9')) continue;

else printf("%c", s[i]);

}

printf("\n");

}

return 0;

}