Hi patrick,
Thanks for your reply.The variable i is used as index to get the channel number , say
I modified the code which i written previously itwas like this
ref main()
while(1)
{
for(i=0;i<5;i++)
{
EA = 0; // disable interrupts
voltage = result[i];// get ADC value from global variable
EA = 1; // re-enable interrupts

voltage = voltage * VREF0;
voltage = voltage >> 16;
printf ("Channel '%d' voltage is %ldmV\n",i, voltage); }
}

since i have added switch option in the project then i removed the for loop.
now i tried to do like this
when ever swicth is pressed we will find interrupt and the programme updates 'i' value, since 'i' is declared as global.
when it comes to main after executing A/D interrupt
A/D converted data ie result[i] gives the channel number

channel 0 voltage is 0mv
channel 1 voltage is 2mv
channel 2 voltage is 1mv
channel 3 voltage is 4mv
channel 4 voltage is 0mv

if again switch pressed then i need result in the above manner

Thanks in advance
raghav