Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:29:20: error: ‘log’ was not declared in this scope y+=log(k); ^ user.cpp:31:27: error: ‘exp’ was not declared in this scope printf("%.4lf\n",exp(y)); ^ user.cpp:18:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:18:24: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:18:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] user.cpp:20:59: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%lf",&i,&l,&k),g[i][w[i]++]=l,c[i][l]=k; ^