gStyle->SetOptTitle(kFALSE);
gStyle->SetPalette(kSolar);

double x[5]  = {1,2,3,4,5};
double y1[5] = {1.0,2.0,1.0,2.5,3.0};
double y2[5] = {1.1,2.1,1.1,2.6,3.1};
double y3[5] = {1.2,2.2,1.2,2.7,3.2};
double y4[5] = {1.3,2.3,1.3,2.8,3.3};
double y5[5] = {1.4,2.4,1.4,2.9,3.4};

TGraph *g1 = new TGraph(5,x,y1); g1->SetTitle("Graph with a red star");
TGraph *g2 = new TGraph(5,x,y2); g2->SetTitle("Graph with a circular marker");
TGraph *g3 = new TGraph(5,x,y3); g3->SetTitle("Graph with an open square marker");
TGraph *g4 = new TGraph(5,x,y4); g4->SetTitle("Graph with a blue star");
TGraph *g5 = new TGraph(5,x,y5); g5->SetTitle("Graph with a full square marker");

g1->SetLineWidth(3); g1->SetMarkerColor(kRed);
g2->SetLineWidth(3); g2->SetMarkerStyle(kCircle);
g3->SetLineWidth(3); g3->SetMarkerStyle(kOpenSquare);
g4->SetLineWidth(3); g4->SetMarkerColor(kBlue);
g5->SetLineWidth(3); g5->SetMarkerStyle(kFullSquare);

g1->Draw("CA* PLC PFC");
g2->Draw("PC  PLC PFC");
g3->Draw("PC  PLC PFC");
g4->Draw("*C  PLC PFC");
g5->Draw("PC  PLC PFC");

gPad->BuildLegend();

gROOT->GetListOfCanvases()->Draw()