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POFunction pointers - pass arguments to a function pointer
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  1. POFunction pointers - pass arguments to a function pointer
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    copied!<p>I have a problem with the code that uses function pointers, take a look:</p> <pre><code>#include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; typedef void (*VFUNCV)(void); void fun1(int a, double b) { printf("%d %f fun1\n", a, b); } void fun2(int a, double b) { printf("%d %f fun2\n", a, b); } void call(int which, VFUNCV* fun, int a, double b) { fun[which](a, b); } int main() { VFUNCV fun[2] = {fun1, fun2}; call(0, fun, 3, 4.5); return 0; } </code></pre> <p>And it produces errors:</p> <pre><code>/home/ivy/Desktop/CTests//funargs.c||In function ‘call’:| /home/ivy/Desktop/CTests//funargs.c|11|error: too many arguments to function ‘*(fun + (unsigned int)((unsigned int)which * 4u))’| /home/ivy/Desktop/CTests//funargs.c||In function ‘main’:| /home/ivy/Desktop/CTests//funargs.c|16|warning: initialization from incompatible pointer type [enabled by default]| /home/ivy/Desktop/CTests//funargs.c|16|warning: (near initialization for ‘fun[0]’) [enabled by default]| /home/ivy/Desktop/CTests//funargs.c|16|warning: initialization from incompatible pointer type [enabled by default]| /home/ivy/Desktop/CTests//funargs.c|16|warning: (near initialization for ‘fun[1]’) [enabled by default]| ||=== Build finished: 1 errors, 4 warnings ===| </code></pre> <p>I used a Code::Blocks to compile it.</p> <p>Its simple, when I dont have any arguments but with some, I got confused:</p> <pre><code>#include &lt;stdio.h&gt; #include &lt;stdlib.h&gt; typedef void (*VFUNCV)(void); void fun1() { printf("fun1\n"); } void fun2() { printf("fun2\n"); } void call(int which, VFUNCV* fun) { fun[which](); } int main() { VFUNCV fun[2] = {fun1, fun2}; call(1, fun); return 0; } </code></pre>
 

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