Geocalc

#include <stdio.h>
#include <math.h>

int base,height,area,perim,ratio,lenght,side1,side2,side3,depth;

int main()
{
    int opc;

    printf("Geocalc 1.0\n\n");

    do{
    printf("Selecciona la figura con la que deseas trabajar:\n\n");
    printf("1) Cuadrado o rectangulo\n2) Triangulo\n3) Circulo\n4) Paralelogramo\n5) Cilindro\n6) Esfera\n7) Prisma rectangular\n8) Cono circular\n");
    scanf("%i",&opc);

    switch(opc){

     /* Rectangle figure*/
     case 1: {printf("\nInserta la medida de la base\n");
              scanf("%d",&base);
              printf("\nInserta la medida de la altura\n");
              scanf("%d",&height);
              printf("\n\nArea: %d\nPerimetro: %d\n\n",area_rectang(base,height), perim_rectang(base,height));
              break;}

    /*Triangle*/
     case 2: {printf("\nInserta la medida de la base\n");
              scanf("%d",&base);
              printf("\nInserta la medida de la altura\n");
              scanf("%d",&height);
              printf("\nInserta la medida de los tres lados\n");
              scanf("%d%d%d",&side1,&side2,&side3);
              printf("\n\nArea: %d\nPerimetro: %d\n\n",area_triang(base,height),perim_triang(side1,side2,side3));
              break;}

     /*Circle*/
     case 3: {printf("\nInserta el radio\n");
              scanf("%d",&ratio);
              printf("\n\nArea: %d\nPerimetro: %d\n\n",area_circ(ratio),perim_circ(ratio));
              break;}

     /*Paralelogram*/
     case 4: {printf("\nInserte la base\n");
              scanf("%d",&base);
              printf("\nInserte la altura\n");
              scanf("%d",&height);
              printf("\n\nArea: %d\nPerimetro: %\n\n",area_rectang(base,height),perim_paral(base,height));
              break;}
     /*Cylinder*/
     case 5: {printf("\nInserte el radio\n");
              scanf("%d",&ratio);
              printf("\nInserte la altura\n");
              scanf("%d",&height);
              printf("\n\nArea: %d\nVolumen: %d\n\n",area_cyl(ratio, height),volum_cyl(ratio,height));
              break;}

     /*Sphere*/
     case 6: {printf("\n\nInserte el radio\n");
              scanf("%d",&ratio);
              printf("\n\nArea: %d\nVolumen: %d\n\n",area_sphere(ratio),volum_sphere(ratio));
              break;}

     /*Rectangular prism*/
     case 7: {printf("\n\nInserte la longitud\n");
              scanf("%d",&lenght);
              printf("\nInserte la profundidad\n");
              scanf("%d",&depth);
              printf("\nInserte la altura\n");
              scanf("%d",&height);
              printf("\n\nArea: %d\nVolume: %d\n\n",area_prism(lenght,depth,height),volum_prism(lenght,depth,height));
              break;}

     /*Circular cone*/
     case 8: {printf("\n\nInserte el radio\n");
              scanf("%d",&ratio);
              printf("\nInserte la altura\n");
              scanf("%d",&height);
              printf("\n\nArea: %d\nVolumen: %d\n\n",area_cone(ratio,height),volum_cone(ratio,height));
              break;}

     default: printf("\nOpción incorrecta. Intentar de nuevo?  1) Si  2)No\n");
              scanf("%i",&opc);
              break;}

    printf("\n\n\nDesea realizar otra operacion?  1) Si  2)No\n");
    scanf("%i",&opc);

    }while(opc==1);
    return 0;
}

//Functions
/*Area of rectangle*/
int area_rectang(base,height)
{
  return (base*height);
}

/*Perimeter of rectangle*/
int perim_rectang()
{
  return (2*(base+height));
}

/*Area of triangle*/
int area_triang()
{
  return (base*height)/2;
}

/*Perimeter of triangle*/
int perim_triang(int side1,int side2,int side3)
{
  return (side1+side2+side3);
}

/*Area of circle*/
int area_circ()
{
  return M_PI*ratio*ratio;
}

/*Perimeter of Circle*/
int perim_circ()
{
  return 2*M_PI*ratio;
}


/*Perimeter of Paralelogram*/
int perim_paral()
{
  return (2*base)+(2*height);
}

/*Area of cylinder*/
int area_cyl()
{
  return 2*M_PI*ratio*(ratio+height);
}

/*Volume of cylinder*/
int volum_cyl()
{
  return M_PI*ratio*ratio*height;
}

/*Area of sphere*/
int area_sphere()
{
  return 4*M_PI*ratio*ratio;
}

/*volume of sphere*/
int volum_sphere()
{
  return (4/3)*M_PI*pow(ratio,3);
}

/*Area of rectangular prism*/
int area_prism()
{
  return 2*(lenght*depth)+2*(depth*height)+2*(height*lenght);
}

/*Volume of rectangular prism*/
int volum_prism(int lenght, int depth)
{
  return lenght*depth*height;
}

/*Area of cone*/
int area_cone()
{
  return M_PI*pow(ratio,2)*sqrt(pow(height,2)+pow(ratio,2));
}

/*Volume of cone*/
int volum_cone()
{
  return (M_PI*pow(ratio,2)*height)/3;
}