Hi guys,
I study mathematics and wrote a simple program calculating binomial
distribution (probability) - I'm just the beginner with C, but I managed to write it
so that it can be run from the command line (DOS). I am sure my code is far from
perfect and everything may be done easier, more elegant, etc. The point is it works (= gives the right answers, hehe). My problem is how can I make it run as a normal windows application (not from command line). When I run DevC there is a template for windows application, however, I tried and I still have no idea where to insert my code.
Here is my program, and after it I pasted the code of a windows application template, I'd be extremely grateful if anyone could just merge the two codes for me. My knowledge of is very low, and I do not understand 95% of the things from the windows template
thank you
My program:
Code:#include<stdio.h> int data_input(); /* function which lets you input the data */ int num_trials; int count=1; int n_result=1; int k; int k_result; int num_successes; int factorial (int factorial_arg); int knerror (); int n_kresult; int nk_final; float power(float base, int exponent); float pow_result; float prob; int prob_error(); float prob_power_return; float subtr_power_return; float final_pdf; int main(void) { data_input(); n_result=factorial(num_trials); /* calculates the factorial of nr of trials */ k_result=factorial(num_successes); /* calculates the factorial of nr of successes */ n_kresult=factorial(num_trials-num_successes); printf("\nn %d! = %d\n", num_trials,n_result); printf("k %d! = %d\n", num_successes,k_result); printf("(n - k)! %d! = %d\n", num_trials-num_successes, n_kresult); nk_final=n_result / (k_result * n_kresult); printf("\nThe binomial coefficient (n/k) equals %d\n", nk_final); prob_power_return=power(prob, num_successes); subtr_power_return=power(1-prob, num_trials-num_successes); final_pdf=nk_final * (prob_power_return * subtr_power_return); printf("\nBinomial distribution for %d trial(s) and %d success(es) is % f\n", num_trials, num_successes, final_pdf); return 0; } /* Function calculating the factorial of the passed argument */ int factorial(int factorial_arg) { int result_factorial = 1; count=1; for(count; count <= factorial_arg; count++) { result_factorial = result_factorial * count; } return result_factorial; } /* knerror function is executed when the number of successes * is higher than the number of trials */ int knerror() { printf("\nThe number of successes cannot be higher than the number of trials!!!\n"); data_input(); return 0; } /* data_input() - Here you enter the input values */ int data_input() { printf("\nEnter the number of trials: "); scanf("%d", &num_trials); printf("Enter the number of successes: "); scanf("%d", &num_successes); if (num_successes>num_trials) /* if the number of successes is higher than trials - do it again */ { printf("\nThe number of successes cannot be higher than the number of trials"); data_input(); } else printf("\nEnter the probability of a single independent outcome: "); scanf("%f", &prob); if (0 > prob > 1 ) { prob_error(); } else /* everything seems ok - go to the main function )*/ return 0; } /* Works out the power of two values - x to the power of y */ float power (float base, int exponent) { int x_count = 1; pow_result = 1; for(x_count;x_count <= exponent; x_count++) { pow_result= pow_result * base; } return pow_result; } int prob_error() { printf("\nThe probability cannot be higher than 1 or lower than 0!!!\n"); data_input; }
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windows application template
Code:#include <windows.h> /* Declare Windows procedure */ LRESULT CALLBACK WindowProcedure(HWND, UINT, WPARAM, LPARAM); /* Make the class name into a global variable */ char szClassName[ ] = "WindowsApp"; int WINAPI WinMain(HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int nFunsterStil) { HWND hwnd; /* This is the handle for our window */ MSG messages; /* Here messages to the application are saved */ WNDCLASSEX wincl; /* Data structure for the windowclass */ /* The Window structure */ wincl.hInstance = hThisInstance; wincl.lpszClassName = szClassName; wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */ wincl.style = CS_DBLCLKS; /* Catch double-clicks */ wincl.cbSize = sizeof(WNDCLASSEX); /* Use default icon and mouse-pointer */ wincl.hIcon = LoadIcon(NULL, IDI_APPLICATION); wincl.hIconSm = LoadIcon(NULL, IDI_APPLICATION); wincl.hCursor = LoadCursor(NULL, IDC_ARROW); wincl.lpszMenuName = NULL; /* No menu */ wincl.cbClsExtra = 0; /* No extra bytes after the window class */ wincl.cbWndExtra = 0; /* structure or the window instance */ /* Use light-gray as the background of the window */ wincl.hbrBackground = (HBRUSH) GetStockObject(LTGRAY_BRUSH); /* Register the window class, if fail quit the program */ if(!RegisterClassEx(&wincl)) return 0; /* The class is registered, let's create the program*/ hwnd = CreateWindowEx( 0, /* Extended possibilites for variation */ szClassName, /* Classname */ "Windows App", /* Title Text */ WS_OVERLAPPEDWINDOW, /* default window */ CW_USEDEFAULT, /* Windows decides the position */ CW_USEDEFAULT, /* where the window ends up on the screen */ 544, /* The programs width */ 375, /* and height in pixels */ HWND_DESKTOP, /* The window is a child-window to desktop */ NULL, /* No menu */ hThisInstance, /* Program Instance handler */ NULL /* No Window Creation data */ ); /* Make the window visible on the screen */ ShowWindow(hwnd, nFunsterStil); /* Run the message loop. It will run until GetMessage( ) returns 0 */ while(GetMessage(&messages, NULL, 0, 0)) { /* Translate virtual-key messages into character messages */ TranslateMessage(&messages); /* Send message to WindowProcedure */ DispatchMessage(&messages); } /* The program return-value is 0 - The value that PostQuitMessage( ) gave */ return messages.wParam; } /* This function is called by the Windows function DispatchMessage( ) */ LRESULT CALLBACK WindowProcedure(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) /* handle the messages */ { case WM_DESTROY: PostQuitMessage(0); /* send a WM_QUIT to the message queue */ break; default: /* for messages that we don't deal with */ return DefWindowProc(hwnd, message, wParam, lParam); } return 0; }
Thank you
