changes in c++ code

c++-mode/fori.yasnippet

@@ -3,7 +3,6 @@
 # key: fori
 # contributor: Andrea crotti
 # --
-
 for (${1:iter}=${2:var}.begin(); $1!=$2.end(); ++$1) {
     $0
 }

c++-mode/io.yasnippet

@@ -3,6 +3,4 @@
 # key: io
 # contributor: Andrea crotti
 # --
-
 #include <iostream>
-$0

c++-mode/operator+.yasnippet

@@ -3,10 +3,9 @@
 # key: +
 # contributor: Andrea crotti
 # --
-
-${1://we need to have defined already the +=}
-const ${2:MyClass} $2::operator+(const $2 &other) const {
-    $2 result = *this;
+${1:MyClass} $1::operator+(const $1 &other)
+{
+    $1 result = *this;
     result += other;
     return result;
 }

c++-mode/operator+=.yasnippet

@@ -4,7 +4,8 @@
 # contributor: Andrea crotti
 # --
 
-${1:MyClass} & $1::operator+=(const $1 &rhs) {
+${1:MyClass} & $1::operator+=(const $1 &rhs)
+{
   $0
   return *this;
 }

c++-mode/operator<<.yasnippet

@@ -4,6 +4,7 @@
 # contributor: Andrea crotti
 # --
 
-ostream& operator<<(ostream& s, const ${1:type}& ${2:c}) {
+ostream& operator<<(ostream& s, const ${1:type}& ${2:c})
+{
          $0
 }

c++-mode/operator>>.yasnippet

@@ -4,6 +4,7 @@
 # contributor: Andrea crotti
 # --
 
-istream& operator>>(istream& s, const ${1:type}& ${2:c}) {
+istream& operator>>(istream& s, const ${1:type}& ${2:c})
+{
          $0
 }