12-14-2010
Calculating cumulative frequency
Hi,
I have a file containing the frequency's of an element sorted in ascending order. The file looks something like this:
#Element Frequency
1 1
2 1
3 1
4 1
5 1
6 1
7 2
8 10
9 15
10 20
What I want is to calculate and print the cumulative frequency (adding the current frequency to the sum of the previous frequency's) with the existing data. So the
output file should look like this:
#Element Frequency Cumulative Frequency
1 1 1
2 1 2
3 1 3
4 1 4
5 1 5
6 1 6
7 2 8
8 10 18
9 15 33
10 20 53
Thanks !!
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LEARN ABOUT OSX
play_sample
play_sample(3alleg4) Allegro manual play_sample(3alleg4)
NAME
play_sample - Plays a sample. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int play_sample(const SAMPLE *spl, int vol, int pan, int freq, int loop);
DESCRIPTION
Triggers a sample at the specified volume, pan position, and frequency. The parameters `vol' and `pan' range from 0 (min/left) to 255
(max/right). Frequency is relative rather than absolute: 1000 represents the frequency that the sample was recorded at, 2000 is twice
this, etc. If `loop' is not zero, the sample will repeat until you call stop_sample(), and can be manipulated while it is playing by call-
ing adjust_sample(). Example:
/* Scream from the left speaker, twice the freq. */
int sound = play_sample(scream, 255, 0, 2000, 0);
RETURN VALUE
Returns the voice number that was allocated for the sample or negative if no voices were available.
SEE ALSO
install_sound(3alleg4), load_sample(3alleg4), adjust_sample(3alleg4), stop_sample(3alleg4), exsample(3alleg4), exsprite(3alleg4)
Allegro version 4.4.2 play_sample(3alleg4)