/in/foo.c: In function 'main':
/in/foo.c:4:7: warning: missing terminating " character
 scanf("%ld, &x);
       ^
/in/foo.c:4:7: error: missing terminating " character
 scanf("%ld, &x);
       ^~~~~~~~~~ 
/in/foo.c:5:10: warning: missing terminating " character
    scanf("%ld,&b);
          ^
/in/foo.c:5:10: error: missing terminating " character
    scanf("%ld,&b);
          ^~~~~~~~~
/in/foo.c:8:1: error: expected expression before 'for'
 for(int a=1;a<=n;a++)
 ^~~
/in/foo.c:18:8: warning: missing terminating " character
 printf("%ld, gs);
        ^
/in/foo.c:18:8: error: missing terminating " character
 printf("%ld, gs);
        ^~~~~~~~~~
/in/foo.c:20:5: error: expected declaration or statement at end of input
     }
     ^
/in/foo.c:3:15: warning: unused variable 'gs' [-Wunused-variable]
 long n,x,a,b, gs=0;
               ^~
/in/foo.c:3:12: warning: unused variable 'b' [-Wunused-variable]
 long n,x,a,b, gs=0;
            ^
/in/foo.c:3:10: warning: unused variable 'a' [-Wunused-variable]
 long n,x,a,b, gs=0;
          ^
/in/foo.c:3:8: warning: unused variable 'x' [-Wunused-variable]
 long n,x,a,b, gs=0;
        ^
/in/foo.c:3:6: warning: unused variable 'n' [-Wunused-variable]
 long n,x,a,b, gs=0;
      ^