Array Problem

aaadetos

Hi, im trying to use the specific value of an array in a computation in another function; but don't know how to set it up. In test(), i want to use the 6th value of C[] in the computation. How do i set this up please? #include "stdafx.h" #include const int size = 10; double A[size] = {0},B[size] = {0}, C[size],c,d; double PI = 3.141592653589793238462643383279502884197; void rah(double C[]) { for (int i=0;i

narendra_ b

i am not clear abt ur requirement. try this #include #include const int size = 10; double A[size] = {0},B[size] = {0}, C[size],c,d; double PI = 3.141592653589793238462643383279502884197; double rah(double *C) { int i = C-::C ; A[i] = sqrt(10*i); B[i] = 2*PI*i; ::C[i] = A[i]*B[i]; return ::C[i] ; } double test()//how do i write this correctly? { d = PI * rah(&C[5]); return d ; } int main(int argc, char* argv[]) { printf("Hello World!\n %f", test()); return 0; } naren VC++ programmer

David Crow

aaadetos wrote: In test(), i want to use the 6th value of C[] in the computation. How do i set this up please? double test()//how do i write this correctly? { rah(C); d = PI * rah(C[5]); } It appears that you are already using "the 6th value of C[] in the computation." What is it that you think is wrong? The code that I do see as wrong is when you are calling the rah() function. rah() is expecting a double array (i.e., C[]), yet you are calling it with a single double value (i.e., C[5]).

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

aaadetos

Thanks a lot guys. The dilemma was to use one of the elements (the 6th) in the computation. I implemented test() in the following way: double test() { rah(C); d = PI * C[5]; return d; }

David Crow

Why is d a global variable? Unless absolutely necesssary, that is very poor practice. In this instance, it makes no sense for test() to return d since it is already global. Either make d local to the test() function, or change test() to return nothing.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown