This is different than previous uploaded question please see carefully.
I have one array called ans[i].
ans[i]={1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 } //n no.of inputed element.Not fix array
and i want to split in group of 3 and stored it in array.Like this if x=2 the it should store the summation of 1+4+7+10+13..like below.
res[0]= 35 //1+4+7+10+13
res[1]=40 //2+5+8+11+14
res[2]=45 //3+6+9+12+15....like this.
Please Help me