Compilare: user.c: In function ‘main’: user.c:12:14: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘char *’ [-Wformat=] fscanf (fin,"%d",&a[i][j]); ^ user.c:15:14: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘char *’ [-Wformat=] fscanf (fin,"%d",&b[i][j]); ^ user.c:9:12: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&n); ^ user.c:12:21: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&a[i][j]); ^ user.c:15:21: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d",&b[i][j]); ^