sscanf（）从字符串中读取数据

结合正则表达式食用效果更佳

#include

#include 
using namespace  std;
int main(){
    char str[100];
    //用法一：取指定长度的字符串
    sscanf("12345","%4s",str);
    printf("1\nstr = %s\n",str);

    //用法二：格式化时间
    int year,month,day,hour,minute,second;
    sscanf("2013/02/13 14:55:34","%d/%d/%d %d:%d:%d",&year,&month,&day,&hour,&minute,&second);
    printf("2\ntime = %d-%d-%d %d:%d:%d\n",year,month,day,hour,minute,second);

    //用法三：读入字符串
    sscanf("12345","%s",str);
    printf("3\nstr = %s\n",str);

    //用法四：%*d 和 %*s 加了星号 (*) 表示跳过此数据不读入. (也就是不把此数据读入参数中)
    sscanf("12345acc","%*d%s",str);
    printf("4\nstr = %s\n",str);

    //用法五：取到指定字符为止的字符串。如在下例中，取遇到'+'为止字符串。
    sscanf("12345+acc","%[^+]",str);
    printf("5\nstr = %s\n",str);

    //用法六：取到指定字符集为止的字符串。如在下例中，取遇到小写字母为止的字符串。
    sscanf("12345+acc121","%[^a-z]",str);
    printf("6\nstr = %s\n",str);
    
   
    cout<<"==============="<<endl;
    int a,b;
    sscanf("(12,5)","(%d,%d)",&a,&b);
    cout<<a<<"  "<<b;
    int c;
    sscanf_s("12345+acc121","%d",&c);
    cout<<c<<endl;


    return 0;
}