Compilare: main.cpp: In function 'int main()': main.cpp:81:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fp_in, "%d", &total); ^ main.cpp:85:32: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fp_in, "%d", &nr_elem); ^ main.cpp:89:30: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fp_in, "%d", &v[i]); ^