To loop through an array is to repeat elements in the array multiple times until a particular condition is satisfied. In this shot, we’ll learn a couple of ways to loop through an array in C++.
We use the following two ways to loop through an array:
for loopwhile loopfor loop example#include <iostream>#include <string>using namespace std;int main() {// creating an arraystring names[3] = {"Theo", "Ben", "Dalu"};for(int i = 0; i < 3; i++) {cout << names[i] << "\n";}return 0;}
Line 7: We create a string type of array names. It has 3 string elements.
Line 8: We declare an integer i. It counts the iterations of the for loop with an increment of 1.
Line 9: We print the element at each index i of the array names in each iteration.
while loop example#include <iostream>using namespace std;int main() {string names[3] = {"Theo", "Ben", "Dalu"};int i=0;while (i < 3) {cout << names[i] << " ";i++;}}
Line 5: We create a string type of array names. It has 3 string elements.
Line 6: We declare an integer i. It counts of the number of iterations.
Line 7: We use the while loop to declare a condition i < 3. The program will execute the conditions inside the body of the while loop until the value of i exceeds 3.
Line 8: We print the element present at index i of the array names.
Line 9: We increment the index variable i by 1.