#include <stdio.h>
#include<stdlib.h>
int finalresult=0;
int main(void) {
int n,c,k,i,j,result1,result2,result;
int a;
scanf("%d",&c);
while©
{
scanf("%d %d",&n,&k);
finalresult =0;
a = (int)malloc( n * sizeof(int) );
for(i=0;i<n;i++)
{
scanf("%d",(a+i));
}
for(i=0;i<n;i++)
{
result1=0;
result2=0;
for(j=i;j<n;j=j+k)
{
result1 = result1 + *(a+j);
}
for(j=i;j>=0;j=j-k)
{
result2 = result2 + *(a+j);
}
if(result1 > result2)
{
result = result1;
}
else
{
result = result2;
}
if(finalresult < result)
{
finalresult = result;
}
}
printf("%d\n",finalresult);
c–;
}
return 0;
}
what is the 4th last line “c-;” ?