Compilare: main.cpp: In function 'int solve(int)': main.cpp:17:13: warning: unused variable 'num' [-Wunused-variable] int num ; ^~~ main.cpp: In function 'int main()': main.cpp:49:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &tests) ; ^ main.cpp:51:38: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", &n) ; ^ main.cpp:53:60: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d", numbers + number) ; ^