call of nonfunction

[natvarara]

#include <stdio.h>
#include <string.h>
#include <conio.h>
#include <ctype.h>

void print_line(); /*function line*/
void show_menu(); /*function menu*/
void circle(float); /*function circle*/
void triangle(float, float); /*function triangle*/
void trapezoid(float ,float,float); /*function trapazoid*/

void main()
{
float radius,circle,a rea,height1,hei ght2,width1,par allel1,parallel 2;
char menu;
clrscr();

do{
printf("Calcula ting Area of Shapes of Grometry\n");
print_line();
show_menu();
scanf("%s",&men u);
menu=toupper(me nu);
print_line();

if(menu=='C') /* check menu */
{ printf("Enter Radius >>"); /* input Radius*/
scanf("%f",&rad ius);
circle(radius); Error call of non function /*link circle*/
}
else if (menu=='T')
{ printf("Enter Width_Triangle >>"); /*input triangle*/
scanf ("%f",&width 1);
printf("Enter Height_Triangle >>");
scanf("%f",&hei ght1);
triangle(width1 ,height1); /*link triangle*/
}
else if (menu=='Z')
{ printf("Enter Parallel_1_Trap ezoid >>"); /*input trapezoid*/
scanf ("%f",&parallel 1);
printf("Enter Parallel_2_Trap ezoid >>");
scanf("%f",&par allel2);
printf("Enter Height_Trapezoi d >>");
scanf("%f",&hei ght2);
trapezoid(heigh t2,parallel1,pa rallel2); /*link trapezoid*/
}
else if (menu=='Q')
{ printf("----------End Program---------------\n");
}}
while (menu!='Q');
getch();
}
void print_line()
{ printf("======= =============== =============== =\n\n");
}
void show_menu()
{ printf(" Menu");
printf("C :: Area of Circle\n");
printf("T :: Area of Triangle\n");
printf("Z :: Area of Trapezoid\n");
printf("Q :: Exit the Program\n\n\n") ;
printf("Select Menu >> ");
}
void circle(float radius) /* function circle*/
{ float circle=0;
circle = 3.14 * radius * radius;
printf("Area of circle is %.2f\n",circle) ;
print_line();
}
void triangle(float width1,float height1) /*function trpangle*/
{ float area=0;
area = 0.5 * width1 * height1;
printf("Area of Triangle is %.2f\n",area);
print_line();
}
void trapezoid(float parallel1,float parallel2,float height2) /*function trapezoid*/
{ float area=0;
area= 0.5 * (parallel1+para llel2) * height2;
printf("Area of Trapezoid is %.2f\n",area);
print_line();

}


help me !! please {Thank You very much}

[JosAH]

You also have a local float variable 'circle'; it hides the declaration of any function named 'circle'. Rename one of them. btw, main() returns an int, it isn't a void function.

kind regards,

Jos