Compilare: user.c:4:1: warning: return type defaults to ‘int’ [enabled by default] main() ^ user.c: In function ‘main’: user.c:17:9: warning: format ‘%f’ expects argument of type ‘float *’, but argument 3 has type ‘long int *’ [-Wformat=] fscanf(fp, "%f", &v1[i]); ^ user.c:21:9: warning: format ‘%f’ expects argument of type ‘float *’, but argument 3 has type ‘long int *’ [-Wformat=] fscanf(fp, "%f", &v2[i]); ^ user.c:43:5: warning: format ‘%f’ expects argument of type ‘double’, but argument 3 has type ‘int’ [-Wformat=] fprintf(fout, "%f", suma); ^