Answer / raju kalyadapu

i). using while-loop

int main()
{
int sum=0,n,i=0,j=2;
printf("Enter 2+4+6+...n upto nth term:");
scanf("%d",&n);
while(i++<n)
{
j=2*i;
sum=sum+i*2;
}
getch();
return 0;
}

ii). using do-while loop

int main()
{
int sum=0,n,i=0,j=2;
printf("Enter 2+4+6+...n upto nth term:");
scanf("%d",&n);

do 
{
j=2*i;
sum=sum+i*2;
} while(i++<n);
printf("
Sum of the Series 2+4+6+----%d is:%d",j,sum);

}

Answer / srujitha

// while loop
int main()
{
int n = 3,sum = 0,i = 2, count = 0;

while(n > count)
{
sum = sum + i;
i = i+2;
count++;
}
printf("SUM = %d ",sum);
}

// do while loop

int main()
{
int n = 3,sum = 0,i = 2, count = 0;


do
{
sum = sum + i;
i = i+2;
count++;
}
while(n > count);
printf("SUM = %d ",sum);
}

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