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  53. <a name="utoa_002d_002d_002dunsigned-integer-to-string"></a>
  54. <h3 class="section">2.49 <code>utoa</code>&mdash;unsigned integer to string</h3>
  55. <a name="index-utoa"></a>
  56. <p><strong>Synopsis</strong>
  57. </p><div class="example">
  58. <pre class="example">#include &lt;stdlib.h&gt;
  59. char *utoa(unsigned <var>value</var>, char *<var>str</var>, int <var>base</var>);
  60. char *__utoa(unsigned <var>value</var>, char *<var>str</var>, int <var>base</var>);
  61. </pre></div>
  62. <p><strong>Description</strong><br>
  63. <code>utoa</code> converts the unsigned integer [&lt;value&gt;] to a null-terminated string
  64. using the specified base, which must be between 2 and 36, inclusive.
  65. <var>str</var> should be an array long enough to contain the converted
  66. value, which in the worst case is sizeof(int)*8+1 bytes.
  67. </p>
  68. <br>
  69. <p><strong>Returns</strong><br>
  70. A pointer to the string, <var>str</var>, or NULL if <var>base</var> is invalid.
  71. </p>
  72. <br>
  73. <p><strong>Portability</strong><br>
  74. <code>utoa</code> is non-ANSI.
  75. </p>
  76. <p>No supporting OS subroutine calls are required.
  77. </p>
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