Compilare: user.cpp: In function ‘int main()’: user.cpp:176:61: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] fprintf(out, "%.10llf\n%.10llf\n", cautaLtoR(xsol), xsol); ^ user.cpp:176:61: warning: use of ‘ll’ length modifier with ‘f’ type character [-Wformat=] user.cpp:144:63: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d%d%d%d%d%d", &n, &l, &w1, &a, &b, &c1, &d); ^