题解 | #表示数字#

#import <Foundation/Foundation.h>

int main(int argc, char* argv[]) {
    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];

    int ch, flag = 0;
    // ch=getchar() 加括号
    while((ch = getchar()) != EOF) {
        if (flag == 0 && isdigit(ch)) {
            flag = 1;
            // 星号加双引号
            printf("*");
        }
        else if (flag == 1 && !isdigit(ch)) {
            flag = 0;
            printf("*");
        }
        putchar(ch);
    }

    [pool drain];
    return 0;
}