为什么右边调试总是不对？
#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？
