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  1. #include <iostream>
  2. #include <fstream>
  3. #include <math.h>
  4.  
  5. using namespace std;
  6.  
  7. int main()
  8. {
  9.     float a,b,c,x1,x2,delta;
  10.     ifstream f("date.in"); ofstream g("date.out");
  11.     f>>a>>b>>c;
  12.     if(a==0)g<<"ec.de gradul 1";
  13.     else
  14.     {
  15.         delta=b*b-4*a*c;
  16.         if(delta>0)
  17.         {
  18.             x1=(-b-sqrt(delta))/(2*a);
  19.             x2=(-b+sqrt(delta))/(2*a);
  20.             g<<"ec.are doua radacini reale";
  21.             g<<"x1="<<x1<<"x2="<<x2;
  22.         }
  23.         else
  24.             if(delta==0)
  25.         {
  26.             g<<"ec.are doua radacini reale";
  27.             g<<"x1=x2="<<-b/(2*a);
  28.         }
  29.         else
  30.             g<<"ec.are doua radacini reale";
  31.     }
  32.     f.close();g.close();
  33. }
  34.  
  35.  
  36.  
  37.  
  38. #include <iostream>
  39. #include<fstream>
  40.  
  41. using namespace std;
  42.  
  43. int main()
  44. { int a,b,r;
  45. ifstream f("euclid.in");
  46. ofstream g("euclid.out");
  47. f>>a>>b;
  48. while(a%b)
  49. {
  50.     r=a%b;a=b;b=r;}
  51. g<<b;
  52. f.close();
  53. g.close();
  54.  
  55. }
  56.  
  57.  
  58.  
  59.  
  60. #include <iostream>
  61. #include <iostream>
  62. #include <math.h>
  63.  
  64. using namespace std;
  65.  
  66. int main()
  67. { unsigned int n,i,j,x,prim;
  68. cout<<"n=";cin>>n;
  69. for(i=1;i<=n;i++);
  70. {
  71.     cout<<"numarul =");cin>>x;
  72.     if(x==1) prim=0;
  73.     else
  74.     {
  75.         prim=1; j=2;
  76.         while(prim&&j<=sqrt(x))
  77.             if(x%j= =0) prim =0;
  78.         else j++;
  79.     }
  80.     if(prim)cout<<x<<endl;
  81. }
  82. }
  83.  
  84. #include <iostream>
  85.  
  86.  
  87. using namespace std;
  88.  
  89. int main()
  90. { unsigned int a, d, m;
  91.  cout<<" a=";cin>>a;
  92.  d=2;
  93.  while(a>1)
  94.  {
  95.      m=0;
  96.      while(a%m==0)
  97.      {m++;a=a/d;}
  98.      if(m)cout<<d<<"^"<<m<<"";
  99.      d++;
  100.  }
  101.  
  102.  
  103. }
  104.  
  105.  
  106.  
  107. #include <iostream>
  108. using namespace std;
  109.  
  110. int main()
  111. { int m, i, z, max, poz;
  112. cout<<"m=";cin>>m;
  113.  randomize();
  114. max=rand()%122;poz=1;
  115. for(i=2;i<=m;i++)
  116. { z=rand()%122;
  117.     if(z>max)
  118.         {max=z; poz=i;}
  119.  
  120. }
  121. cout<<"maxim="<<max;
  122. cout<<"pe pozitia="<<poz;}
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