C Program of minimum cost problem

/* Write a C Program of minimum cost problem.  */
======================================
#include<stdio.h>
#include<conio.h>
void main()
{
float p, cost, p1, cost1;
for(p=0; p<=10; p=p+0.1)
{
cost=40-8*p+p*p;
if(p= =0)
{
cost1=cost;
continue;
}
if(cost>=cost1)
break;
cost1=cost;
p1=p;
}
p=(p+p1)/2.0;
cost=40-8&p+p*p;
printf(“MINIMUM COST=%.2f AT p=%.1f”, cost, p);
}
Output:
MINIMUM COST = 24.00 AT p=4.0