7-83 币值转换

 个，万，亿都是节点，要单独处理。

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

int main() {
	char s[11]="";
	gets(s);
	int len=strlen(s);
	char str[11]="";
	int i;
	for(i=0;i<len;i++){
		str[i]=s[len-1-i];
	}
	str[len]='A';
	char ch;
	char a;
	int t=0;
	for(i=len-1;i>=0;i--){
		switch(i){
		case 1:case 5:ch='S';break;
		case 2:case 6:ch='B';break;
		case 3:case 7:ch='Q';break;
		case 8:ch='Y';break;
		case 4:ch='W';break;
		case 0:break;
		}
		if(i==8){
			printf("%c%c",str[i]+'a'-'0',ch);
		}else if(i>4&&i<8){
			if(str[i]!='0'){
				t=1;
				printf("%c%c",str[i]+'a'-'0',ch);
			}else if(str[i]=='0'&&str[i-1]!='0'){
				printf("a");
			}
		}else if(i==4){
			if(str[i]!='0'){
				printf("%c%c",str[i]+'a'-'0',ch);	
			}else if(t==1){
				printf("W");
			}
		}else if(i>0){
			if(str[i]!='0'){
				printf("%c%c",str[i]+'a'-'0',ch);
			}else if(str[i]=='0'&&str[i-1]!='0'){
				printf("a");
			}
		}else{
			if(str[i]!='0'){
				printf("%c",str[i]+'a'-'0');
			}else if(len==1){
				printf("a");
			}
		}
		
	}
	return 0;
}