Compilare: user.cpp: In function ‘void readFile()’: user.cpp:99:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp:97:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &t); ^ user.cpp:108:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:112:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &gas[i]); ^ user.cpp:121:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &d[i]); ^ user.cpp: In function ‘void solve()’: user.cpp:53:14: warning: array subscript is above array bounds [-Warray-bounds] add[i] = add[i - 1] + extra; ^