View Compilation Error

0_0_39312834_28489.cpp:1:9: error: #include expects "FILENAME" or <FILENAME>
    1 | #include
      |         ^
0_0_39312834_28489.cpp: In function 'int main()':
0_0_39312834_28489.cpp:5:1: error: 'scanf' was not declared in this scope
    5 | scanf("%d%d",&n,&m);
      | ^~~~~
0_0_39312834_28489.cpp:16:1: error: 'printf' was not declared in this scope
   16 | printf("%.2f \n",avern/n); //每个学生平均成绩
      | ^~~~~~
0_0_39312834_28489.cpp:1:1: note: 'printf' is defined in header '<cstdio>'; did you forget to '#include <cstdio>'?
  +++ |+#include <cstdio>
    1 | #include
0_0_39312834_28489.cpp:25:18: error: expected ';' before ')' token
   25 | for(j=0;j=averm/m)
      |                  ^
      |                  ;