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What will be the output when the following code segment is executed?
a) string str = "welcome to cst1201";
b) string code;
c) int len = str. length();
d) system. out. println(len);
e) system. out. println(str. charat(3));
f) system. out. println(str. substring(len-4);

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What will be the output when the following code segment is executed?
a) string str = "welcom...
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