Compilare: user.c: In function ‘main’: user.c:9:5: warning: format ‘%ld’ expects argument of type ‘long int *’, but argument 3 has type ‘int *’ [-Wformat=] fscanf(f,"%ld",&n); ^ user.c:10:5: warning: format ‘%ld’ expects argument of type ‘long int *’, but argument 3 has type ‘int *’ [-Wformat=] fscanf(f,"%ld",&m); ^ user.c:9:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&n); ^ user.c:10:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&m); ^ user.c:17:19: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%ld",&V[i][j]); ^