1. We have moved from vBulletin to XenForo and you are viewing the site in the middle of the move. Though the functional aspect of everything is working fine, we are still working on other changes including the new design on Xenforo.
    Dismiss Notice

C++ error C4716: 'F_Ite' : must return a value

Discussion in 'Meet and Greet' started by sdmahapatra, Jun 16, 2009.

  1. sdmahapatra

    sdmahapatra New Member

    Hi all,I am a new coder in C++ and have found "error C4716: 'F_Ite' : must return a value".
    I want to return all the value of a,b,c,Fc,Fd to the main function at each iteration at a time.
    But in general we return only return one value.please help me to fulfill this coding.

    Thanks

    Code:
    double F_Ite()
     {                      //F_Ite Function Start   
         //Locally Data_type Declaration And Initialization :
      int numElement =20;
      double *a,*b,*c,*d,*Fc,*Fd;
      a = new double[numElement];
      b = new double[numElement];
      c = new double[numElement];
      d = new double[numElement];
      Fc= new double[numElement];
      Fd= new double[numElement];
         
      
      for(int k=1;k<(NI-1);k++)
        {                        //Main 'for' Loop Start
            std::cout <<"\n";
            system("pause");
            std::cout <<"\n";
            std::cout <<"At The "<<k+1<<" Iteration :\n";
            
          if(Fc[k]<Fd[k])
          {                     //Outer 'if' Start
            a[k+1]=a[k];
            std::cout <<"The Value Of a" << k+1 << "=" << a[k+1] << "\n";
            b[k+1]=d[k];
            std::cout <<"The Value Of b" << k+1 << "=" << b[k+1] << "\n";
            //c[k+1]=b[k+1]-(0.618034*((1-pow(-0.381966,NI-k))/(1-pow(-0.381966,NI-k+1))))*(b[k+1]-a[k+1]);
            //cout <<"The Value Of c" << k+1 << "=" << c[k+1] << "\n";
            if(k==(NI-1))
            {
              c[k+1]=c[k+1]+z;
              std::cout <<"The Value Of c" << k+1 << "=" << c[k+1] << "\n";
            }
            else
            {
            c[k+1]=b[k+1]-(0.618034*((1-pow(-0.381966,NI-k))/(1-pow(-0.381966,NI-k+1))))*(b[k+1]-a[k+1]);
            std::cout <<"The Value Of c" << k+1 << "=" << c[k+1] << "\n";
            }
            d[k+1]=c[k];
            std::cout <<"The Value Of d" << k+1 << "=" << d[k+1] << "\n";
    
            Fc[k+1]=(exp(-c[k+1]))+(c[k+1]*c[k+1]);
            std::cout <<"The Value Of Fc" << k+1 << "=" << Fc[k+1] << "\n";
            //std::cout <<"The Value Of Fc" << k+1 << "=" << Fc[k] << "\n";
    
            Fd[k+1]=Fc[k];
            //std::cout <<"The Value Of Fd" << k+1 << "=" << Fc[k] << "\n";
            std::cout <<"The Value Of Fd" << k+1 << "=" << Fd[k+1] << "\n";
                    
    
          }                        //Outer 'if' Close
           else
          {                     //Outer 'else' Start
            a[k+1]=c[k];
            std::cout <<"The Value Of a" << k+1 << "=" << a[k+1] << "\n";
            b[k+1]=b[k];
            std::cout <<"The Value Of b" << k+1 << "=" << b[k+1] << "\n";
            c[k+1]=d[k];
            std::cout <<"The Value Of c" << k+1 << "=" << c[k+1] << "\n";
            //d[k+1]=a[k+1]+((0.618034)*((1-pow((-0.381966),(NI-k)))/(1-pow((-0.381966),(NI-k+1)))))*(b[k+1]-a[k+1]);
            //std::cout <<"The Value Of d" << k+1 << "=" << d[k+1] << "\n";
            
            if(k==(NI-1))
          {
            d[k+1]=d[k+1]+z;
            std::cout <<"The Value Of d" << k+1 << "=" << d[k+1] << "\n";
          }
    
            else
            {
            d[k+1]=a[k+1]+((0.618034)*((1-pow((-0.381966),(NI-k)))/(1-pow((-0.381966),(NI-k+1)))))*(b[k+1]-a[k+1]);
            std::cout <<"The Value Of d" << k+1 << "=" << d[k+1] << "\n";
            }
    
                
            Fc[k+1]=Fd[k];
            //std::cout <<"The Value Of Fc" << k+1 << "=" << Fd[k] << "\n";
            std::cout <<"The Value Of Fc" << k+1 << "=" << Fc[k+1] << "\n";
            Fd[k+1]=(exp(-d[k+1]))+(d[k+1]*d[k+1]);
            std::cout <<"The Value Of Fd" << k+1 << "=" << Fd[k+1] << "\n";
            //std::cout <<"The Value Of Fd" << k+1 << "=" << Fd[k] << "\n";
    
          }                        //Outer 'else' Close
         }                    //Main 'for' Loop Close
    
          //Another 'if' Condition Start But Within The 'for' Loop
            if(Fc[10]<Fd[10])
        {
            std::cout <<"\n";
          std::cout <<"\nAt Final Iteration :\n";
          a[NI]=a[NI-1];
          b[NI]=d[NI-1];
          std::cout <<"The Value Of a11 =" << a[NI] << "\n";
          std::cout <<"The Value Of b11 =" << b[NI] << "\n";
        }
        else
        {
          a[NI]=c[NI-1];
          b[NI]=b[NI-1];
          std::cout <<"The Value Of a11 =" << a[NI] << "\n";
          std::cout <<"The Value Of b11 =" << b[NI] << "\n";
        }
    
    }                   //F_Ite Function End
    
     
    Last edited by a moderator: Jun 16, 2009

Share This Page