range based for loop c++
array<int, 5> values = {1, 2, 3, 4, 10};
// the type declaration below must be consistent with the array type
for (int x : values){ //we use a colon instead of in
cout << x << endl;
}range based for loop c++
array<int, 5> values = {1, 2, 3, 4, 10};
// the type declaration below must be consistent with the array type
for (int x : values){ //we use a colon instead of in
cout << x << endl;
}iterate over a range in c++
for (int i=0; i<5; ++i) {
cout << i << " ";
}
// output is 0 1 2 3 4; note 5 is excluded since < is used and not <=range based for loop c++ with reference
1 #include <iostream>
2 #include <array>
3 #include <cstdlib>
4
5 using namespace std;
6
7 int main(){
8 array<int, 5> d = {1, 2, -1, 3, 5};
9 cout << "Items before modification: " << endl;
10 for (int item : d){
11 cout << item << " ";
12 }
13 //multiple elements of d by 3
14 for (int &itemRef : d){
15 itemRef *= 3;
16 }
17 cout << endl << "Items after modification: " << endl;
18 for (int item : d){
19 cout << item << " ";
20 }
21 cout << endl;
22 return 0;
23 }auto in c++
int foo = 0;
auto bar = foo; // the same as: int bar = foo;
// type of bar is the type of the value used to initialize itrange based for loop c++
for (<variable_declaration> : expression){
//statements
}for auto c++
for (auto&& [first,second] : mymap) {
// use first and second
}Copyright © 2021 Codeinu
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