#include <stdio.h>

int study()

 {

     printf("%s\n","小明在慕课网上学习\n");

    return 0;

    }

int studys(int n)

 {

printf("小明在慕课网上学习了%d门课程\n"，n);

     return 0;

 }

int main()

{

    study();

    studys(5);

    return 0;

}

提示说正确，但是右边一摩尔提示说调试错误

/249/5442/8LOv/hello.c: In function 'studys':
/249/5442/8LOv/hello.c:9:1: error: stray '\357' in program
printf("小明在慕课网上学习了%d门课程\n"，n);
^
/249/5442/8LOv/hello.c:9:1: error: stray '\274' in program
/249/5442/8LOv/hello.c:9:1: error: stray '\214' in program
/249/5442/8LOv/hello.c:9:56: error: expected ')' before 'n'
printf("小明在慕课网上学习了%d门课程\n"，n);                                                

是咋个回事喃？