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Group of answer choices

stream insertion operator

Not sure

None of these

pen object

cout object

output object

.

Given two int variables with initial values, we want to exchange their contents by calling a function which has been declared and defined, as follows:

int num1 = 10;

int num2 = 20;

swapVars(num1, num2);

Which is not a proper declaration of the function?

Group of answer choices

None of these

void swapVars(int &var1, int &var2);

void swapVars(int& var1, int& var2);

void swapVars(int var1, int var2);

Which cout statement correctly output three integers, num1, num2 and num3, each of which occupies 10 spaces?

Group of answer choices

None of these

cout

cout

cout