43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
// Lab 6 swapNums.cpp -- Using Value and Reference Parameters
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// This program uses a function to swap the values in two variables.
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// Llewellym van der Merwe
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#include <iostream>
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using namespace std;
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// Function prototype
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void swapNums(int&, int&);
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/***** main *****/
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int main()
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{
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int num1 = 5,
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num2 = 7;
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// Print the two variable values
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cout << "In main the two numbers are "
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<< num1 << " and " << num2 << endl;
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// Call a function to swap the values stored
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// in the two variables
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swapNums(num1, num2);
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// Print the same two variable values again
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cout << "Back in main again the two numbers are "
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<< num1 << " and " << num2 << endl;
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return 0;
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}
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/***** swapNums *****/
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void swapNums(int& a, int& b)
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{ // Parameter a receives num1 and parameter b receives num2
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// Swap the values that came into parameters a and b
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int temp = a;
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a = b;
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b = temp;
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// Print the swapped values
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cout << "In swapNums, after swapping, the two numbers are "
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<< a << " and " << b << endl;
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}
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