Question: what wrong? the Question was that the program changes the color of triangle. The program paint the triangle using red if 'r' is pressed, green

what wrong? the Question was that the program changes the color of triangle. The program paint the triangle using red if 'r' is pressed, green if 'g' is pressed, blue if 'b' is pressed, and if any other key program terminates. (Use Dev C++)
glBegin (GL TRIANGLES) ; if (user input =r ) f glColor3f( 1, 0, 0) ; // red glVertex 2f(0.8,0.8)
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