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using math operation as string in array on an expression

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yonatan gerufi
yonatan gerufi 2014-5-23
编辑： Mischa Kim 2014-5-23
Hi all,
i need to do some math operation on elements in certain order, as:
3+4, 3-4, 3*4, 3/4, 3^4
i thought using a string array
['+','-','*'..]
and somehow to do
3 arr[i] 4
but i just can't make it work! any ideas?

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Mischa Kim
Mischa Kim 2014-5-23
编辑：Mischa Kim 2014-5-23
yonatan, you are on the right track:
carray = {'3+4','3/4'};
res = eval(carray{2})
res =
0.750000000000000

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