How to sum up subelements of a list of unknown length

I'm simply looking for the {}+{} function for sublist elements of a list: (Parallel sums of elements)

c = {{1, 2, 3, 4}, {8, 7, 6, 5}};
Plus[c]
Mean[c]  
desired={9, 9, 9, 9}

Where Mean does directly what it's supposed to, unfortunately Plus doesn't. I tried Take and Part but they both do not seem to work here . Additionally, my c consists of a varying number of elements. I tried to work with Length[c] and Range .. ({}+{} is no solution as list element number varies) thank you for help!!

Answer

Use either

Plus@@c

Total[c]

Comments

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