updated some C snippets

snippets/c.snippets

@@ -1,6 +1,6 @@
 # main()
 snippet main
-	int main (int argc, char const* argv[])
+	int main(int argc, char const* argv[])
 	{
 		${1}
 		return 0;
@@ -12,10 +12,12 @@ snippet inc
 snippet Inc
 	#include "${1:`Filename("$1.h")`}"${2}
 # #ifndef ... #define ... #endif
-snippet def
+snippet Def
 	#ifndef $1
 	#define ${1:SYMBOL} ${2:value}
 	#endif${3}
+snippet def
+	#define 
 # Header Include-Guard
 # (the randomizer code is taken directly from TextMate; it could probably be
 # cleaner, I don't know how to do it in vim script)
@@ -56,12 +58,12 @@ snippet for
 	}
 # Custom For Loop
 snippet forr
-	for (${1:i} = 0; ${2:$1 < 10}; $1${3:++}) {
-		${4:/* code */}
+	for (${1:i} = ${2:0}; ${3:$1 < 10}; $1${4:++}) {
+		${5:/* code */}
 	}
 # Function
 snippet fun
-	${1:void} ${2:function_name} (${3})
+	${1:void} ${2:function_name}(${3})
 	{
 		${4:/* code */}
 	}