自己写的。C语言。题解 | #表示数字#

#include<stdio.h>
int main() {
    char line[300];
    int c, i = 0;
    char flag = 0;
    while ((c = getchar()) != 10) {
        if (c >= '0' && c <= '9') {
            if (flag == 0) {
                line[i++] = '*';
                line[i++] = c;
                flag = 1;
            } else {
                line[i++] = c;
            }
        } else {
            if (flag == 1) {
                line[i++] = '*';
                line[i++] = c;
                flag = 0;
            } else {
                line[i++] = c;
            }
        }
    }
    if (flag == 1) {
        line[i++] = '*';
    }
    line[i] = '\0';
    printf("%s\n", line);
    return 0;
}