题解 | #表示数字#

#include <stdio.h>

inline int isdig(char ch)
{
    if(ch >= '0' && ch <= '9')
        return 1;
    return 0;
}
int main() {
    char tmpType = 0;
    char ch = 0;
    int typeCurrent;
    while(EOF != (ch = getchar()))
    {
        typeCurrent = isdig(ch);
        if(tmpType != typeCurrent)
            printf("*%c",ch);
        else 
            printf("%c",ch);
        tmpType = typeCurrent;
    }    
}