Compilare: user.cpp: In function ‘int main(int, char**)’: user.cpp:78:7: warning: unused variable ‘line’ [-Wunused-variable] char line[100]; ^ user.cpp:79:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(i, "%d\n",&T); ^