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Dynamic array storing values
Could not deduce template argument for T[]Why is processing a sorted array faster than processing an unsorted array?Dynamic Array C++ (Deletion)Initializing std::array inside a functionFirst item in an array is getting… replaced?A simple vector, how can I reassign the address for a new array correctlyInitialize a constexpr std::array with the size of an n-dimensional std::arrayReinitialising an array on if statementVarious errors out of nowhere, f.e. 'string' does not name a type even with <string> and std declaredC++ I need to be able to resize my dynamic array
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I resized my array with a function, however it seems like it does not store any array value I entered.
basically I put -1, the loop stops and then supposed to show the elements in array. but it does not show anything.
The output does not show anything after cout.
#include <iostream>
using namespace std;
void resize(int *&arr, int &size)
int tempsize=size;
size=size+10;
int *temp= new int [size];
for(int i=0; i<tempsize;i++)
temp[i]=arr[i];
delete [] arr;
arr=temp;
int main()
int size=0;
int capacity =10;
int *p=new int[capacity];
int check=0;
int input;
cout<<"Please enter the number in array and input -1 to end it.";
while(check!=-1)
cin>>input;
if(input==-1)
check=-1;
else
if(size==capacity)
resize(p,capacity);
p[size]=input;
size++;
cout<<"Show me the numbers in array: ";
for(int i=0; i<size;i++)
cout<<p[i]<<" ";
cout<<endl;
delete [] p;
return 0;
c++
asked Mar 27 at 19:41
gLeegLee
203 bronze badges
add a comment |
I resized my array with a function, however it seems like it does not store any array value I entered.
basically I put -1, the loop stops and then supposed to show the elements in array. but it does not show anything.
The output does not show anything after cout.
#include <iostream>
using namespace std;
void resize(int *&arr, int &size)
int tempsize=size;
size=size+10;
int *temp= new int [size];
for(int i=0; i<tempsize;i++)
temp[i]=arr[i];
delete [] arr;
arr=temp;
int main()
int size=0;
int capacity =10;
int *p=new int[capacity];
int check=0;
int input;
cout<<"Please enter the number in array and input -1 to end it.";
while(check!=-1)
cin>>input;
if(input==-1)
check=-1;
else
if(size==capacity)
resize(p,capacity);
p[size]=input;
size++;
cout<<"Show me the numbers in array: ";
for(int i=0; i<size;i++)
cout<<p[i]<<" ";
cout<<endl;
delete [] p;
return 0;
c++
asked Mar 27 at 19:41
gLeegLee
203 bronze badges
1
Do you really have to work with raw arrays? This would be much easier to achieve with STL.
– Sceptical Jule
Mar 27 at 19:49
@ScepticalJule telling raw beginners to work with the stl is hardly helpful. if he doesn't understand the basics of arrays, he's been learning for about 10 minutes. This is clearly a learning exercise, and no way is he ready to learn the stl.
– Joseph Larson
Mar 27 at 19:59
add a comment |
I resized my array with a function, however it seems like it does not store any array value I entered.
basically I put -1, the loop stops and then supposed to show the elements in array. but it does not show anything.
The output does not show anything after cout.
#include <iostream>
using namespace std;
void resize(int *&arr, int &size)
int tempsize=size;
size=size+10;
int *temp= new int [size];
for(int i=0; i<tempsize;i++)
temp[i]=arr[i];
delete [] arr;
arr=temp;
int main()
int size=0;
int capacity =10;
int *p=new int[capacity];
int check=0;
int input;
cout<<"Please enter the number in array and input -1 to end it.";
while(check!=-1)
cin>>input;
if(input==-1)
check=-1;
else
if(size==capacity)
resize(p,capacity);
p[size]=input;
size++;
cout<<"Show me the numbers in array: ";
for(int i=0; i<size;i++)
cout<<p[i]<<" ";
cout<<endl;
delete [] p;
return 0;
c++
asked Mar 27 at 19:41
gLeegLee
203 bronze badges
I resized my array with a function, however it seems like it does not store any array value I entered.
basically I put -1, the loop stops and then supposed to show the elements in array. but it does not show anything.
The output does not show anything after cout.
#include <iostream>
using namespace std;
void resize(int *&arr, int &size)
int tempsize=size;
size=size+10;
int *temp= new int [size];
for(int i=0; i<tempsize;i++)
temp[i]=arr[i];
delete [] arr;
arr=temp;
int main()
int size=0;
int capacity =10;
int *p=new int[capacity];
int check=0;
int input;
cout<<"Please enter the number in array and input -1 to end it.";
while(check!=-1)
cin>>input;
if(input==-1)
check=-1;
else
if(size==capacity)
resize(p,capacity);
p[size]=input;
size++;
cout<<"Show me the numbers in array: ";
for(int i=0; i<size;i++)
cout<<p[i]<<" ";
cout<<endl;
delete [] p;
return 0;
c++
c++
asked Mar 27 at 19:41
gLeegLee
203 bronze badges
asked Mar 27 at 19:41
gLeegLee
203 bronze badges
asked Mar 27 at 19:41
gLeegLee
203 bronze badges
asked Mar 27 at 19:41
gLeegLee
203 bronze badges
asked Mar 27 at 19:41
gLeegLee
203 bronze badges
203 bronze badges
1
Do you really have to work with raw arrays? This would be much easier to achieve with STL.
– Sceptical Jule
Mar 27 at 19:49
@ScepticalJule telling raw beginners to work with the stl is hardly helpful. if he doesn't understand the basics of arrays, he's been learning for about 10 minutes. This is clearly a learning exercise, and no way is he ready to learn the stl.
– Joseph Larson
Mar 27 at 19:59
add a comment |
1
Do you really have to work with raw arrays? This would be much easier to achieve with STL.
– Sceptical Jule
Mar 27 at 19:49
@ScepticalJule telling raw beginners to work with the stl is hardly helpful. if he doesn't understand the basics of arrays, he's been learning for about 10 minutes. This is clearly a learning exercise, and no way is he ready to learn the stl.
– Joseph Larson
Mar 27 at 19:59
1
1
Do you really have to work with raw arrays? This would be much easier to achieve with STL.
– Sceptical Jule
Mar 27 at 19:49
Do you really have to work with raw arrays? This would be much easier to achieve with STL.
– Sceptical Jule
Mar 27 at 19:49
@ScepticalJule telling raw beginners to work with the stl is hardly helpful. if he doesn't understand the basics of arrays, he's been learning for about 10 minutes. This is clearly a learning exercise, and no way is he ready to learn the stl.
– Joseph Larson
Mar 27 at 19:59
@ScepticalJule telling raw beginners to work with the stl is hardly helpful. if he doesn't understand the basics of arrays, he's been learning for about 10 minutes. This is clearly a learning exercise, and no way is he ready to learn the stl.
– Joseph Larson
Mar 27 at 19:59
add a comment |
1 Answer
1
active
oldest
votes
Your if statement whether you need to resize the array is too encompassing. The should contain just the resize, then outside the is when you should store into the array.
Instead, size is 0, which != capacity, so you don't do anything.
answered Mar 27 at 19:49
Joseph LarsonJoseph Larson
1,32710 silver badges13 bronze badges
1
This answer it too cryptographic to me
– Amadeus
Mar 27 at 19:52
@Amadeus cryptographic? Perhaps you mean confusing? Look at his if(size == capacity) code block. He only adds to the array if a resize is required.
– Joseph Larson
Mar 27 at 19:58
I'm sorry, this was a kind of sarcasm to say that your answer is too dificult to undersand. It would be easier if you shows in code what do you really means or want to say in words
– Amadeus
Mar 27 at 20:08
It worked out Joseph, i put input and size++ right below cin>>input;
– gLee
Mar 27 at 20:15
add a comment |
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Your if statement whether you need to resize the array is too encompassing. The should contain just the resize, then outside the is when you should store into the array.
Instead, size is 0, which != capacity, so you don't do anything.
answered Mar 27 at 19:49
Joseph LarsonJoseph Larson
1,32710 silver badges13 bronze badges
1
This answer it too cryptographic to me
– Amadeus
Mar 27 at 19:52
@Amadeus cryptographic? Perhaps you mean confusing? Look at his if(size == capacity) code block. He only adds to the array if a resize is required.
– Joseph Larson
Mar 27 at 19:58
I'm sorry, this was a kind of sarcasm to say that your answer is too dificult to undersand. It would be easier if you shows in code what do you really means or want to say in words
– Amadeus
Mar 27 at 20:08
It worked out Joseph, i put input and size++ right below cin>>input;
– gLee
Mar 27 at 20:15
add a comment |
Your if statement whether you need to resize the array is too encompassing. The should contain just the resize, then outside the is when you should store into the array.
Instead, size is 0, which != capacity, so you don't do anything.
answered Mar 27 at 19:49
Joseph LarsonJoseph Larson
1,32710 silver badges13 bronze badges
1
This answer it too cryptographic to me
– Amadeus
Mar 27 at 19:52
@Amadeus cryptographic? Perhaps you mean confusing? Look at his if(size == capacity) code block. He only adds to the array if a resize is required.
– Joseph Larson
Mar 27 at 19:58
I'm sorry, this was a kind of sarcasm to say that your answer is too dificult to undersand. It would be easier if you shows in code what do you really means or want to say in words
– Amadeus
Mar 27 at 20:08
It worked out Joseph, i put input and size++ right below cin>>input;
– gLee
Mar 27 at 20:15
add a comment |
Your if statement whether you need to resize the array is too encompassing. The should contain just the resize, then outside the is when you should store into the array.
Instead, size is 0, which != capacity, so you don't do anything.
answered Mar 27 at 19:49
Joseph LarsonJoseph Larson
1,32710 silver badges13 bronze badges
Your if statement whether you need to resize the array is too encompassing. The should contain just the resize, then outside the is when you should store into the array.
Instead, size is 0, which != capacity, so you don't do anything.
answered Mar 27 at 19:49
Joseph LarsonJoseph Larson
1,32710 silver badges13 bronze badges
answered Mar 27 at 19:49
Joseph LarsonJoseph Larson
1,32710 silver badges13 bronze badges
answered Mar 27 at 19:49
Joseph LarsonJoseph Larson
1,32710 silver badges13 bronze badges
answered Mar 27 at 19:49
Joseph LarsonJoseph Larson
1,32710 silver badges13 bronze badges
1,32710 silver badges13 bronze badges
1
This answer it too cryptographic to me
– Amadeus
Mar 27 at 19:52
@Amadeus cryptographic? Perhaps you mean confusing? Look at his if(size == capacity) code block. He only adds to the array if a resize is required.
– Joseph Larson
Mar 27 at 19:58
I'm sorry, this was a kind of sarcasm to say that your answer is too dificult to undersand. It would be easier if you shows in code what do you really means or want to say in words
– Amadeus
Mar 27 at 20:08
It worked out Joseph, i put input and size++ right below cin>>input;
– gLee
Mar 27 at 20:15
add a comment |
1
This answer it too cryptographic to me
– Amadeus
Mar 27 at 19:52
@Amadeus cryptographic? Perhaps you mean confusing? Look at his if(size == capacity) code block. He only adds to the array if a resize is required.
– Joseph Larson
Mar 27 at 19:58
I'm sorry, this was a kind of sarcasm to say that your answer is too dificult to undersand. It would be easier if you shows in code what do you really means or want to say in words
– Amadeus
Mar 27 at 20:08
It worked out Joseph, i put input and size++ right below cin>>input;
– gLee
Mar 27 at 20:15
1
1
This answer it too cryptographic to me
– Amadeus
Mar 27 at 19:52
This answer it too cryptographic to me
– Amadeus
Mar 27 at 19:52
@Amadeus cryptographic? Perhaps you mean confusing? Look at his if(size == capacity) code block. He only adds to the array if a resize is required.
– Joseph Larson
Mar 27 at 19:58
@Amadeus cryptographic? Perhaps you mean confusing? Look at his if(size == capacity) code block. He only adds to the array if a resize is required.
– Joseph Larson
Mar 27 at 19:58
I'm sorry, this was a kind of sarcasm to say that your answer is too dificult to undersand. It would be easier if you shows in code what do you really means or want to say in words
– Amadeus
Mar 27 at 20:08
I'm sorry, this was a kind of sarcasm to say that your answer is too dificult to undersand. It would be easier if you shows in code what do you really means or want to say in words
– Amadeus
Mar 27 at 20:08
It worked out Joseph, i put input and size++ right below cin>>input;
– gLee
Mar 27 at 20:15
It worked out Joseph, i put input and size++ right below cin>>input;
– gLee
Mar 27 at 20:15
add a comment |
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1
Do you really have to work with raw arrays? This would be much easier to achieve with STL.
– Sceptical Jule
Mar 27 at 19:49
@ScepticalJule telling raw beginners to work with the stl is hardly helpful. if he doesn't understand the basics of arrays, he's been learning for about 10 minutes. This is clearly a learning exercise, and no way is he ready to learn the stl.
– Joseph Larson
Mar 27 at 19:59