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Problems with my if loop
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Join Date: Jan 2008
Posts: 37
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Hi guys:
The following code is supposed to the following:
1 - Receive a random number and divide the number by 1000
2 - Then it needs to check if the number is greater than the series number and the cut point and convert the divided random number to either 1 or -1.
3 - Then do the sum of the (-1 and 1) and this will be my new series number.
4 - Then it will check again.
There is an initial condition that the sum[0] = 1. The cut points I need to use are either 7.5, 5 or 2.5.
My problem is that the code only returns a bunch of -1. I am certain that my problem is in my if ...else if statements. Can anyone point me into the right direction Please don't hesitate to ask any questions, I take criticism pretty well. Here is the code.
G
The following code is supposed to the following:
1 - Receive a random number and divide the number by 1000
2 - Then it needs to check if the number is greater than the series number and the cut point and convert the divided random number to either 1 or -1.
3 - Then do the sum of the (-1 and 1) and this will be my new series number.
4 - Then it will check again.
There is an initial condition that the sum[0] = 1. The cut points I need to use are either 7.5, 5 or 2.5.
My problem is that the code only returns a bunch of -1. I am certain that my problem is in my if ...else if statements. Can anyone point me into the right direction Please don't hesitate to ask any questions, I take criticism pretty well. Here is the code.
G
C++ Syntax (Toggle Plain Text)
/Program name = random.cpp #include <cstdlib> #include <iostream> using namespace std; int number_generator(); int main() { int series; double average, times, cut_point; double series_number[1000001]; double time_series_average[100]; double sum[100]; cout << "How long you want your series: "; cin >> series; cout << "How many times do you want to run the series: "; cin >> times; cout << "What is your cutting point: "; cin >> cut_point; for (int j=0; j<times; j++) { for (int i=0; i<series; i++) { sum[0] = 1; double number_to_use = rand() % 9999; double actual_random_integer = number_to_use/1000; //cout << "number to use = " << number_to_use << //cout << i << "= " << actual_random_integer << endl; if (actual_random_integer > cut_point && sum[j] > 0) { series_number[i] = 1; } else if (actual_random_integer > cut_point && sum[j] < 0) { series_number[i] = -1; } else if (actual_random_integer < cut_point && sum[j] > 0) { series_number[i] = 1; } else if (actual_random_integer < cut_point && sum[j] < 0) { series_number[i] = -1; } //cout << "Series nummber [" << i << "]" << series_number[i] << endl; sum[j]+=series_number[i]; //cout << "sum = " << sum[j] << endl; } time_series_average[j] = sum[j]/series; cout << "(" << j << ") " << time_series_average[j] << endl; //delete [] time_series_average; } //cout << sum << endl; //average = sum/series; //cout << "AVERAGE = " << average << endl; }
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