/in/foo.c: In function 'main':
/in/foo.c:13:10: warning: too many arguments for format [-Wformat-extra-args]
   printf("c",a[i][j]);
          ^~~
/in/foo.c:15:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("k",a[i][j]);
               ^~~
/in/foo.c:16:15: warning: too many arguments for format [-Wformat-extra-args]
   else printf("w",a[i][j]);
               ^~~
/in/foo.c:27:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("c",a[i][j]);
            ^~~
/in/foo.c:29:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("k",a[i][j]);
               ^~~
/in/foo.c:30:16: warning: too many arguments for format [-Wformat-extra-args]
    else printf("w",a[i][j]);
                ^~~
/in/foo.c:47:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("c",a[i][j]);
            ^~~
/in/foo.c:49:15: warning: too many arguments for format [-Wformat-extra-args]
        printf("k",a[i][j]);
               ^~~
/in/foo.c:51:12: warning: too many arguments for format [-Wformat-extra-args]
     printf("w",a[i][j]);
            ^~~