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