Compilare: user.cpp: In function ‘void solve()’: user.cpp:34:15: warning: unused variable ‘h’ [-Wunused-variable] int i, j, h; ^ user.cpp:36:9: warning: unused variable ‘dif’ [-Wunused-variable] int dif; ^ user.cpp: In function ‘void readFile()’: user.cpp:88:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &t); ^ user.cpp:95:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d%d", &n, &v[1]); ^ user.cpp:102:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[j]); ^