有大佬帮我看看出了什么问题吗，不胜感激。```c

#include<stdio.h>

int main(){
    freopen("in.txt","r",stdin);
    freopen("out.txt","w",stdout);
    int a,b,c,A,B,C;
    char d[4];
    scanf("%d%d%d",&a,&b,&c);
    if(a>b&&a>c){
        C=a;
        if(b>=c){
            B=b;
            A=c;
        }
        else{
            B=c;
            A=b;
        }
    }
    else if(b>a&&b>c){
        C=b;
        if(a>=c){
            B=a;
            A=c;
        }
        else{
            B=c;
            A=a;
        }
    }
    else{
        C=c;
        if(a>=b){
            B=a;
            A=b;
        }
        else{
            B=b;
            A=a;
        }
    }
    getchar();
    gets(d);
    getchar();
    if(d[0]=='A')
            printf("%d",A);
    if(d[0]=='B')
            printf("%d",B);
    if(d[0]=='C')
            printf("%d",C);
    for(int i=1;i<3;i++){
        if(d[i]=='A')
            printf(" %d",A);
        if(d[i]=='B')
            printf(" %d",B);
        if(d[i]=='C')
            printf(" %d",C);
    }
    return 0;
}