exercise

[rovita]

dear everybody……..!!!!!!!!
i have a problem in my programming study

how to make a program which the out put is:
enter n=5

<br /> 1 2 3 4 5 4 3 2 1<br /> 2 3 4 5 4 3 2<br />      3 4 5 4 3<br />        4 5 4<br />            5<br />

1 2 3 4 5 6 7

<br /> 1 2 3 4 5 4 3 2 1<br /> 2 3 4 5 4 3 2<br />      3 4 5 4 3<br />         4 5 4<br />            5<br />

[starfish]

hi frd,

just see if u can find this appropriate….

#include <iostream><br /> using namespace std;<br /> <br /> main(){<br /> <br /> int a[10];<br /> int n,i,j=0,k;<br /> <br /> cout<<"Enter the value for n: ";<br /> cin>>n;<br /> k=n;<br /> <br /> for (i=0 ;i < 10; i++)<br /> a=i + 1;<br /> <br /> while(k>0){<br />         for(i=(0+j);i<n;i++)<br />                 cout<<a<<" ";<br />         for(i=n-2;i>=(0+j);i--)<br />                 cout<<a<<" ";<br />         cout<<endl;<br />         j++;<br />         for(i=0;i<j;i++)<br />                 cout<<" ";<br />         k--;<br /> }<br /> <br /> return 0;<br /> }<br /> <br /> Output :<br /> <br /> Enter the value for n: 5<br /> 1 2 3 4 5 4 3 2 1<br /> 2 3 4 5 4 3 2<br />     3 4 5 4 3<br />       4 5 4<br />         5 </iostream>

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38

#include <iostream><br /> using namespace std;<br /> <br /> main(){<br /> <br /> int a[10];<br /> int n,i,j=0,k;<br /> <br /> cout<<"Enter the value for n: ";<br /> cin>>n;<br /> k=n;<br /> <br /> for (i=0 ;i < 10; i++)<br /> a=i + 1;<br /> <br /> while(k>0){<br />         for(i=(0+j);i<n;i++)<br />                  cout<<a<<" ";<br />         for(i=n-2;i>=(0+j);i--)<br />                  cout<<a<<" ";<br />         cout<<endl;<br />         j++;<br />         for(i=0;i<j;i++)<br />                  cout<<"  ";<br />         k--;<br /> }<br /> <br /> return 0;<br /> }<br /> <br /> Output :<br /> <br /> Enter the value for n: 5<br /> 1 2 3 4 5 4 3 2 1<br /> 2 3 4 5 4 3 2<br />     3 4 5 4 3<br />       4 5 4<br />         5  </iostream>

plz let me know if you have any further queries

[hemalathak]

the code doesnt output as expected
 
when i try this code its output is
 

10 10 10 10 10 10 10 10 10<br />      10 10 10 10 10 10 10<br />           10 10 10 10 10<br />                10 10 10<br />                     10

1 2 3 4 5

10 10 10 10 10 10 10 10 10<br />      10 10 10 10 10 10 10<br />           10 10 10 10 10<br />                10 10 10<br />                     10

 

[S.Thananchayan]

This one was interesting.
I ended up with this:

#include <iostream><br /> using namespace std;<br /> #include <vector><br /> int main()<br /> {<br />  cout << "You are only allowed to enter 5" << endl  ;<br />  std::vector<int>::iterator iter;<br />  std::vector</int><int> intVector;<br />  int z;<br />  cout << "enter a valuen";<br />  cin >>z;<br />  if (z &lt;5)<br />       return main();<br />       <br />  if (z >5)<br />   return main();<br />  else<br />   for (int i=0; i<z; ++i)<br />    intVector.push_back(z - i);<br />  reverse(intVector.begin(), intVector.end());<br />  for (int i=1; i<z+1; ++i)<br />   intVector.push_back(z - i);<br />  intVector.pop_back();<br />  reverse(intVector.begin(), intVector.end());<br />  for (iter = intVector.begin(); iter != intVector.end(); ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  reverse(intVector.begin(), intVector.end());<br />  for (iter = intVector.begin() +1; iter != intVector.end()-1; ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  for (iter = intVector.begin() +2; iter != intVector.end()-2; ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  for (iter = intVector.begin() +3; iter != intVector.end()-3; ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  for (iter = intVector.begin() +4; iter != intVector.end()-4; ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  return (0);<br /> }</int></vector></iostream>

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

#include <iostream><br /> using namespace std;<br /> #include <vector><br /> int main()<br /> {<br />  cout << "You are only allowed to enter 5" << endl  ;<br />  std::vector<int>::iterator iter;<br />  std::vector</int><int> intVector;<br />  int z;<br />  cout << "enter a valuen";<br />  cin >>z;<br />  if (z &lt;5)<br />       return main();<br />       <br />  if (z >5)<br />   return main();<br />  else<br />   for (int i=0; i<z; ++i)<br />    intVector.push_back(z - i);<br />  reverse(intVector.begin(), intVector.end());<br />  for (int i=1; i<z+1; ++i)<br />   intVector.push_back(z - i);<br />  intVector.pop_back();<br />  reverse(intVector.begin(), intVector.end());<br />  for (iter = intVector.begin(); iter != intVector.end(); ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  reverse(intVector.begin(), intVector.end());<br />  for (iter = intVector.begin() +1; iter != intVector.end()-1; ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  for (iter = intVector.begin() +2; iter != intVector.end()-2; ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  for (iter = intVector.begin() +3; iter != intVector.end()-3; ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  for (iter = intVector.begin() +4; iter != intVector.end()-4; ++iter)<br />   cout << *iter;<br />  cout << endl;<br />  return (0);<br /> }</int></vector></iostream>

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