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    <a href="../index-2.html">cppreference.com</a> &gt; <a href=
    "index.html">C++ Strings</a> &gt; <a href=
    "replace.html">replace</a>
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  <div class="name-format">
    replace
  </div>

  <div class="syntax-name-format">
    Syntax:
  </div>
  <pre class="syntax-box">
  #include &lt;string&gt;
  string&amp; replace( <strong>size_type</strong> index, <strong>size_type</strong> num, const string&amp; str );
  string&amp; replace( <strong>size_type</strong> index1, <strong>size_type</strong> num1, const string&amp; str, <strong>size_type</strong> index2, <strong>size_type</strong> num2 );
  string&amp; replace( <strong>size_type</strong> index, <strong>size_type</strong> num, const char* str );
  string&amp; replace( <strong>size_type</strong> index, <strong>size_type</strong> num1, const char* str, <strong>size_type</strong> num2 );
  string&amp; replace( <strong>size_type</strong> index, <strong>size_type</strong> num1, <strong>size_type</strong> num2, char ch );
  string&amp; replace( iterator start, iterator end, const string&amp; str );
  string&amp; replace( iterator start, iterator end, const char* str );
  string&amp; replace( iterator start, iterator end, const char* str, <strong>size_type</strong> num );
  string&amp; replace( iterator start, iterator end, <strong>size_type</strong> num, char ch );
</pre>

  <p>The function replace() either:</p>

  <ul>
    <li>replaces characters of the current string with up to
    <em>num</em> characters from <em>str</em>, beginning at
    <em>index</em>,</li>

    <li>replaces up to <em>num1</em> characters of the current string
    (starting at <em>index1</em>) with up to <em>num2</em> characters
    from <em>str</em> beginning at <em>index2</em>,</li>

    <li>replaces up to <em>num</em> characters of the current string
    with characters from <em>str</em>, beginning at <em>index</em> in
    <em>str</em>,</li>

    <li>replaces up to <em>num1</em> characters in the current string
    (beginning at <em>index1</em>) with <em>num2</em> characters from
    <em>str</em> beginning at <em>index2</em>,</li>

    <li>replaces up to <em>num1</em> characters in the current string
    (beginning at <em>index</em>) with <em>num2</em> copies of
    <em>ch</em>,</li>

    <li>replaces the characters in the current string from
    <em>start</em> to <em>end</em> with <em>str</em>,</li>

    <li>replaces characters in the current string from <em>start</em>
    to <em>end</em> with <em>num</em> characters from
    <em>str</em>,</li>

    <li>or replaces the characters in the current string from
    <em>start</em> to <em>end</em> with <em>num</em> copies of
    <em>ch</em>.</li>
  </ul>

  <p>For example, the following code displays the string &quot;They say
  he carved it himself...find your soul-mate, Homer.&quot;</p>
<pre class="prettyprint">
   string s = &quot;They say he carved it himself...from a BIGGER spoon&quot;;
   string s2 = &quot;find your soul-mate, Homer.&quot;;
   s.replace( 32, s2.length(), s2 );
   cout &lt;&lt; s &lt;&lt; endl;
</pre>

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