C code for Basic Cocomo Model

//C program to calculate effort, development time, productivity and average staff required in Basic cocomo model//

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

int fround(float x)
{
  int a;
  x=x+0.5;
  a=x;
  return(a);
}

void main()
{
  float effort,time,staff,productivity;
  float table[3][4]={2.4,1.05,2.5,0.38,3.0,1.12,2.5,0.35,3.6,1.20,2.5,0.32};
  int size,model;
  char mode[][15]={"Organic","Semi-Detached","Embedded"};

  clrscr();

  printf("
Enter size of project (in KLOC) : ");
  scanf("%d",&size);

  if(size>=2 && size<=50)
    model=0;     //organic
  else if(size>50 && size<=300)
    model=1;     //semi-detached
  else if(size>300)
    model=2;     //embedded

  printf("
The mode is %s
",mode[model]);

  effort=table[model][0]*pow(size,table[model][1]);
  time=table[model][2]*pow(effort,table[model][3]);
  staff=effort/time;
  productivity=size/effort;

  printf("
Effort = %f Person-Month",effort);
  printf("

Development Time = %f Months",time);
  printf("

Average Staff Required = %d Persons",fround(staff));
  printf("

Productivity = %f KLOC/Person-Month",productivity);

getch();
}