Compilare: user.c: In function ‘main’: user.c:35:17: warning: format ‘%d’ expects argument of type ‘int *’, but argument 3 has type ‘long long int *’ [-Wformat=] fscanf(f,"%d",&a[i][j]); ^ user.c:16:47: warning: unused variable ‘OK’ [-Wunused-variable] int i, j, t, w, n, par = 0, imp = 1, sum, OK; ^ user.c:20:11: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&t); ^ user.c:25:13: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&w); ^ user.c:35:23: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i][j]); ^