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    <p><code>weight</code> is calling <code>height</code> <em>again</em>, and it will obviously be generating a different number (that's the whole point of an RNG :) ).</p> <p>To obtain the effect you want you could:</p> <ul> <li><p>change <code>weight</code> to accept the the <code>height</code> as a parameter; then, in the <code>main</code>, at each iteration save the value returned by <code>height</code> in a temporary variable and pass it to height to obtain the corresponding height;</p> <pre><code>int weight(int height) { return height*2.77; } // ... inside the main ... while (n &lt;= 10) { int curHeight=height(); cout &lt;&lt; curHeight &lt;&lt; " and " &lt;&lt; weight(curHeight) &lt;&lt; endl; ++n; } </code></pre></li> <li><p>move <code>height</code> and <code>weight</code> to a class, which will store <code>height</code> as a private field, adding a <code>nextPerson</code> member that will update the internal field to a new random value.</p> <pre><code>class RandomPersonGenerator { int curHeight; public: RandomPersonGenerator() { nextPerson(); } int height() { return curHeight; } int weight() { return height()*2.77; } void nextPerson() { curHeight=random(1, 24, 60); } }; // ... inside the main ... RandomPersonGenerator rpg; while (n &lt;= 10) { rpg.nextPerson(); cout &lt;&lt; rpg.height() &lt;&lt; " and " &lt;&lt; rpg.weight() &lt;&lt; endl; ++n; } </code></pre></li> </ul> <p>(by the way, it's <code>int main</code>, not <code>void main</code>, and a <code>for</code> cycle is more appropriate than <code>while</code> in this situation)</p>
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    1. POGetting random numbers to stay the same from function to function
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    1. COFor some reason that I don't understand your first suggestion didn't work. It ended up repeating the same pair of numbers ten times instead of giving me ten randoms. I figure I probably did something wrong there. As to your second suggestion, you've given me the perfect opening to move into classes, something I need to learn. So, thanks for that!
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    2. CO@JeremySharp: did you keep the original `height` function? Can you post your complete code on ideone.com or pastbin.com so I can have a look?
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    3. COThat may be what I did. I have to go and redevelop the complete code now...maybe with classes thanks to your suggestion.
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