Thread: module definition file

In the given code there is no syntax error but still not executable, showing "linker: module definition file" as default.Plz help me out.

Code:

#include<stdio.h>
int n;
float Moment=0, Weight=0;
float lcg;
void main()
{
  struct ship_tank
  {
	  float weight;
	  float LCG;
  };

	struct ship_tank A[20];
	int i;

 for(i=1;i<=n;i++)
{
 printf("Enter the numbers of tanks:  ");
 scanf("%d",&i);
 printf("Enter the weight of tank%d:  " );
 scanf("%f",& A[i].weight);
 printf("Enter the LCG of tank%d:  ");
 scanf("%f",& A[i].LCG);
 Moment= Moment + A[i].weight*A[i].LCG;
 Weight= Weight + A[i].weight;
 lcg = Moment/Weight;
 printf(" The lcg is: %f", lcg);
 }
 }

Please properly indent your code and post your code within [code][/code] bbcode tags. You might also want to tell us what compiler you are using, how you are using it, and post the exact error message.

Other things to note:

• You should declare the main function as returning an int, not void.
• You should avoid global variables; place them in the main function instead.
• The definition of struct ship_tank should be moved to before the main function, though it does not matter in this case. (The declaration of the array of struct ship_tank objects should remain in the main function.)
• You use the variable n without initialising it. Nonetheless, since it is currently a global variable, it is automatically initialised to 0, but that is probably not what you want.
• Valid array indices are from 0 to one less than the number of elements of the array, but your loop starts looping from 1 instead of 0.
• You forgot to provide the arguments to be printed when using printf().