If \n is not there the program accepts 5 and if \n is used in scanning then the programs asks for 6 inputs.
#include<stdio.h>
int main()
{
int marks[5];
int i;
for(i=0;i<5;i++)
{
scanf("%d\n",&marks[i]);
}
for(i=0;i<5;i++)
{
printf("the element at %d is %d\n",i,marks[i]);
}
return 0;
}