Adding the elements of a list sequentially

*To*: mathgroup at smc.vnet.net*Subject*: [mg109327] Adding the elements of a list sequentially*From*: ebaugh at illinois.edu*Date*: Thu, 22 Apr 2010 03:29:59 -0400 (EDT)

I am looking for an efficient way to add the elements of a list sequentially onto another list For example, generate list c, given lists a and b: a = {1,2,3,4,5,6,7,8,9,10} b = {1,2} c = {2,4,4,5,6,7,8,9,10,11} another example: a = {1,1,1,1,1} b = {1,2,3} c = {2,3,4,2,3} It seems like there must be a built in function to do this, but have been unable to find it. Thanks a 10^6 Jason Ebaugh