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Here is my code:<br />
<br />
va_list args;<br />
char &nbsp; &nbsp;traceText[10];<br />
<br />
...<br />
<br />
va_start (args, formatString);<br />
vsprintf (&amp;(traceText[sIndex]), formatString, args);<br />
va_end(args);<br />
<br />
...<br />
<br />
Question1: Can you explain all the v... instructions in the code?<br />
Question2: If relevant what is this part of code doing?<br />

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Here is my code:

va_list args;
char    traceText[10];

...

va_start (args, formatString);
vsprintf (&(traceText[sIndex]), formatString, args);
va_end(args);

...

Question1: Can you explain all the v... instructions in the code?
Question2: If relevant what is this part of code doing?


vsprintf and others v...

C is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, so it has found lasting use in applications that had formerly been coded in assembly language, including operating systems as well as various application software for computers ranging from supercomputers to embedded systems. It is distinct from C++ (which has its roots in C) and C#, and many later languages have borrowed directly or indirectly from C.