程序调试的结果和输出的结果不一样

#include<stdio.h>
#include <stdlib.h>
#include <time.h>
#define gpj n/(n+1)
#define zpj 0.5
#define dpj 1/(n+1)
#define gpr 1/(n+1)
#define zpr 0.5
#define dpr n/(n+1)
#define p1 0.2
#define p2 0.6
#define ps n/(n+1)
void main()
{
int i,r,j;
int n=1;
for(i=0;i<10;i++)
{
srand((unsigned)time(NULL));
r=rand()%100;
if(r<100*p1)
{
srand((unsigned)time(NULL));
j=rand()%100;
if(j>100*ps)
n=n;
else
{
if(j<(100*gpj*ps))
{
if(n>=1)n=n-1;
else n=0;
}
else n=n+1;
}
}
if(r>=(100*p1)&&r<=(100*(p1+p2)))
{
srand((unsigned)time(NULL));
j=rand()%100;
if(j>100*ps)
n=n;
else
{
if(j<(100*zpj*ps))
{
if(n>=1)n=n-1;
else n=0;
}