Compilare: user.cpp: In function ‘int fct(int*, int, int, int*)’: user.cpp:37:10: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp:60:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:70:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fr, "%d", &n); ^ user.cpp:73:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (fr, "%d", &v[i]); ^