Compilare: user.cpp: In function ‘int main()’: user.cpp:36:46: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘double*’ [-Wformat=] for(i=1;i<=n;i++)scanf("%f%f",&x[i],&y[i]); ^ user.cpp:36:46: warning: format ‘%f’ expects argument of type ‘float*’, but argument 3 has type ‘double*’ [-Wformat=] user.cpp:39:23: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘double*’ [-Wformat=] scanf("%f%f",&a,&b); ^ user.cpp:39:23: warning: format ‘%f’ expects argument of type ‘float*’, but argument 3 has type ‘double*’ [-Wformat=] user.cpp:40:23: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘double*’ [-Wformat=] scanf("%f%f",&c,&d); ^ user.cpp:40:23: warning: format ‘%f’ expects argument of type ‘float*’, but argument 3 has type ‘double*’ [-Wformat=] user.cpp:57:26: warning: format ‘%f’ expects argument of type ‘float*’, but argument 2 has type ‘double*’ [-Wformat=] scanf("%f%f",&a,&b); ^ user.cpp:57:26: warning: format ‘%f’ expects argument of type ‘float*’, but argument 3 has type ‘double*’ [-Wformat=] user.cpp: In function ‘int caut(int, int)’: user.cpp:29:1: warning: control reaches end of non-void function [-Wreturn-type] } ^