Add prefix or suffix to each element in a list in C++
In this tutorial, we will learn how to add prefix or suffix to each element in a list in C++. Before proceeding for implementation let’s first understand what do you mean by prefix and suffix.
Prefix: is an affix that is placed at the beginning of an entity in order to alter its meaning.
For example in the word “rematch” re is a prefix and match is an original entity.
Suffix: is an affix that is placed at the end of an entity in order to alter its meaning.
For example in the word “strongest” est is a suffix and strong is an original entity.
Program to add prefix or suffix to each element in a list in C++
#include<iostream> #define MAX 100 using namespace std; void add_prefix(int arr[], int n, int prefix) { /* result will stored in array 'temp' */ int temp[MAX],cnt=1; /* after adding prefix to each element size of resultant array will become 2n and loop will execute for index 0 to 2n-1 */ for(int i=0 ; i<= 2*n-1 ; i++) { /* prefix will occupy even indices of the resultant array */ if(i%2==0) { temp[i]=prefix; } else { /* element which was at index 'i-cnt' in original array will occupy index 'i' of the resultant array. */ temp[i]=arr[i-cnt]; cnt++; } } cout<<"\nResultant array after adding prefix to each element in an array: "; for(int i=0;i<=2*n-1;i++) { cout<<temp[i]<<" "; } } void add_suffix(int arr[], int n, int suffix) { /* result will stored in array 'temp' */ int temp[MAX]; /* after adding suffix to each element size of resultant array will become 2n and loop will execute for index 0 to 2n-1 */ for(int i=0 ; i<= 2*n-1 ; i++) { /* suffix will occupy odd indices of the resultant array */ if(i%2==1) { temp[i]=suffix; } else { /* element which was at index 'i/2' in original array will occupy index 'i' of the resultant array. */ temp[i]=arr[i/2]; } } cout<<"\nResultant array after adding suffix to each element in an array: "; for(int i=0;i<=2*n-1;i++) { cout<<temp[i]<<" "; } } int main() { int n, ch, arr[MAX],i,prefix,suffix; cout<<"Enter no. of elements of the list: "; cin>>n; cout<<"\nEnter elements of the list: "; for(i=0;i<n;i++) { cin>>arr[i]; } cout<<"\n****menu****"; cout<<"\n1) Add prefix to each element in a list"; cout<<"\n2) Add suffix to each element in a list"; cout<<"\nEnter your choice (1 or 2): "; cin>>ch; switch(ch) { case 1: cout<<"\nEnter prefix: "; cin>>prefix; add_prefix(arr,n,prefix); break; case 2: cout<<"\nEnter suffix: "; cin>>suffix; add_suffix(arr,n,suffix); break; /* Writing default case is not compulsory but it is a good programming practice. We can write default case anywhere in the switch block */ default: cout<<"\nInvalid choice..!!"; } return 0; }
Input/Output (prefix):
Enter no. of elements of the list: 4 Enter elements of the list: 1 2 3 4 ****menu**** 1) Add prefix to each element in a list 2) Add suffix to each element in a list Enter your choice (1 or 2): 1 Enter prefix: 0 Resultant array after adding prefix to each element in an array: 0 1 0 2 0 3 0 4
Input/Output (suffix):
Enter no. of elements of the list: 4 Enter elements of the list: 1 2 3 4 ****menu**** 1) Add prefix to each element in a list 2) Add suffix to each element in a list Enter your choice (1 or 2): 2 Enter suffix: 0 Resultant array after adding suffix to each element in an array: 1 0 2 0 3 0 4 0
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