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C++ inceput

 
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KillForFun

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Post Posted: 06-10-2013, 14:09:19 | Translate post to: ... (Click for more languages)

-se citeste un nr intreg , calculati suma cifrelor

exercitiul asta l-am facut in clasa doar pe caiet dar cand incerc sa-l fac pe calculator.. nu-mi merge

Poza : http://oi41.tinypic.com/2ihuq7k.jpg

@ am mai cautat cateva exercitii in caiet si aproape aceleasi erori imi apar..



EDIT : exercitiu copiat din carte : - se interschimba continutul a doua variabile intregi u si v.

Rezolvare ( din carte ) :
#include<iostream.h>
void main()
{
int u=5,v=9;

u = u+v;
v = u-v;
u = u-v;
cout<<"u="<<u<<"v="<<v;

}


erori :

DDF.cpp
In file included from C:\OJI\MinGWStudio\MinGW\include\c++\3.3.1\backward\iostream.h:31,
from DDF.cpp:1:
C:\OJI\MinGWStudio\MinGW\include\c++\3.3.1\backward\backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated.
DDF.cpp:3: error: `main' must return `int'
DDF.cpp:3: error: return type for `main' changed to `int'
DDF.cpp:11:2: warning: no newline at end of file

DDF.exe - 2 error(s), 2 warning(s)



Poate fi o problema de la MinGW ? Daca incerc sa pun cu "iostream.h" nu ma lasa si-mi apare "warning" ala dar daca pun doar "iostream" dispare "warning" dar apar erori..

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KillForFun

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Post Posted: 08-10-2013, 14:12:03 | Translate post to: ... (Click for more languages)

Porblema aia am rezolvat-o, acum am alta.. copiez un exercitiu din caietul de clasa ( exercitiu care l-am rezolvat in clasa si mi-a mers pe calculator) si aici nu-mi merge.. dau execute si stau cateva secunde apoi apare "Cannot execute program".. erori am 0 si 3 warning..
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nr913
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Post Posted: 08-10-2013, 14:20:51 | Translate post to: ... (Click for more languages)

Ce warnings?

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KillForFun

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Post Posted: 08-10-2013, 14:42:03 | Translate post to: ... (Click for more languages)

http://oi39.tinypic.com/2v3hc2g.jpg

edit: fara iostream.h nu-mi merge.. dispare un "warning" dar apar 3 erori ..

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zUzU~

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Post Posted: 08-10-2013, 15:02:05 | Translate post to: ... (Click for more languages)

Dupa #include<iostream> incearca sa pui using namespace std; , la sfarsit return 0; de fiecare data cand folosesti int si cam atat -


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In2ition

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Post Posted: 08-10-2013, 15:07:06 | Translate post to: ... (Click for more languages)

Code:

#include<iostream>
using namespace std;

int main(){
int a,b;
cout<<"a ";
cin>>a;
cout<<"b ";
cin>>b;
cout<<"Val a+b= "<<a+b;
}


We stop looking for monsters under the bed when we realize they're inside of us.

nr913 wrote:
no really, dacã nu era așa țãrancã, și dacã era în bucurești, o luam de nevastã

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KillForFun

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Post Posted: 08-10-2013, 15:55:56 | Translate post to: ... (Click for more languages)

Am copiat ce a scris in2ition mai sus si inca imi dadea 1 warning , am lasat spatiu acolo cum scria dar tot nu-mi merge.. apare aia cu "Cannot execute program"

http://oi40.tinypic.com/dnf1xc.jpg

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In2ition

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Post Posted: 08-10-2013, 16:09:56 | Translate post to: ... (Click for more languages)

Instaleaza Codeblocks.

We stop looking for monsters under the bed when we realize they're inside of us.

nr913 wrote:
no really, dacã nu era așa țãrancã, și dacã era în bucurești, o luam de nevastã

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KillForFun

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Post Posted: 13-10-2013, 14:41:18 | Translate post to: ... (Click for more languages)

Am rezolvat si aia - era de la anti virus... acum am alta problema -

Se citesc n numere intregi. Sa se determine si sa se afiseze cate dintre ele sunt pare:
Quote:
#include<iostream>
using namespace std;

int main(){
int n,x,i,y;
cout<<"n=";
cin>>n;
for(i=1;i<=n;i++)
{ cin>>x;
if(x%2==0)
{ y++;}
}
cout<<"Sunt"<<y<<"numere pare";
}


am scris aia , porneste , bag numere dar nu se opreste pana nu bag unul mare de vreo 10-11 cifre si cand apare aia cu "Sunt ... " apare mereu "Sunt 4194344 numere pare".Vreo rezolvare - ?


Edit : e de la "i<=n"? vad ca daca bag n=3 si bag 3 numere ( 3 1 6) nu ar trebui sa apara ca e doar 1 numar par.. ? mie imi apare ca sunt 49139405 sau ceva de genu

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bamboochaa

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Post Posted: 14-10-2013, 16:06:42 | Translate post to: ... (Click for more languages)

Ati lucrat cu vectori?
Daca da, poti sa faci un vector cu "n" elemente, unde "n" il citesti de la tastatura.Populezi vectorul cu ce valori vrei dupa care il parcurgi si verifici daca fiecare valoare este numar par.
O sa revin cu o sursa imediat ce instalez un compilator


edit:

#include <iostream>
using namespace std;

void main()
{
int i,n,a[100];
int contor = 0;

cout<<"Vectorul are n elemente: ";
cin>>n;

for(i=0;i<n;i++)
{
cout<<"a[i] = ";
cin>>a[i];
}

for(i=0;i<n;i++)
{
if(a[i]%2==0)
contor++;
}
cout<<"Nr de elemente pare: "<<contor;
}



Last edited by bamboochaa on 14-10-2013, 16:57:37; edited 1 time in total
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KillForFun

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Post Posted: 14-10-2013, 16:57:14 | Translate post to: ... (Click for more languages)

Nu am lucrat..de abea anul asta am inceput cu c++ si eu vreau rezolvarea la aia nu cu vectori..
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bamboochaa

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Post Posted: 14-10-2013, 17:04:25 | Translate post to: ... (Click for more languages)

Incerc si fara vector si postez.
In programelul tau, vezi ca trebuie sa initializezi "y" cu 0.

Rezolvare:

#include <iostream>
using namespace std;

void main()
{
int i,n,numar,contor=0;
cout<<"Nr: ";
cin>>n;

for(i=0;i<n;i++)
{
cout<<"Numarul este: ";
cin>>numar;

if(numar%2==0)
contor++;
}
cout<<"Nr de numere pare este: "<<contor;
}

Spune-mi daca iti merge.

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