/in/foo.cc: In function 'int main()':
/in/foo.cc:18:24: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'double*' [-Wformat=]
     scanf("%d",&a[i][j]);
                ~~~~~~~~^
/in/foo.cc:65:25: warning: format '%d' expects argument of type 'int', but argument 2 has type 'double' [-Wformat=]
     printf("%d ",a[i][j]);
                  ~~~~~~~^