三角形余弦曲线，通过对坐标轴的赋值 绘制出相应的图形-Triangle cosine curve, through the assignment of axes draw the corresponding graph

Visual C++中在界面下画坐标轴，并标出横纵坐标系的刻度。-In Visual C++ under the contact surface the picture coordinate axis, and sections out the horizontal y-coordinate department the scale division.