When making changes to existing font, the user must first

There is a little paper clip at the bottom of your screen and then you click then you pick the picture you want

Cprogram to find //perimeter of rectangle printf(" \n perimeter of rectangle \n"); printf(""); printf("\n enter width and length of the rectangle : "); scanf("%f%f", & width,& length); perimeter = 2 * (width + length); printf("perimeter of rectangle is: %.3f", perimeter);  

Answerby using forms;