A simple parallel routine
Posted: Fri Sep 17, 2004 4:14 am
Hi All,
I need to create a simple parallel routine which returns a substring. The C program to get the substring is as follows
I have the object file for this C program.
My concern is that the main program can return only integer. How to return string. How do I create a parallel routine that returns a string provided with the input string, the starting position and the length as inputs for the C object file.
Thanks in advance
--Rich
Pride comes before a fall
Humility comes before honour
I need to create a simple parallel routine which returns a substring. The C program to get the substring is as follows
Code: Select all
#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <math.h>
char *substr(char*,int,int);
main(int argc,char *argv[])
{
char *z;
z = substr(argv[1],atoi(argv[2]),atoi(argv[3]));
printf("%s\n",z);
free(z);
}
char *substr(char *str,int st,int len)
{
int i,j=0,l;
char *s;
l = strlen(str);
if(len > 0)
s = (char *)malloc(100);
else
return("");
if(l < abs(st))
return("");
if(st == 0)
st = 1;
if(st < 0)
st = st + l + 1;
for(i=st-1; i<st+len-1; i++)
{
s[j] = str[i];
j++;
}
s[j] = '\0';
return(s);
}My concern is that the main program can return only integer. How to return string. How do I create a parallel routine that returns a string provided with the input string, the starting position and the length as inputs for the C object file.
Thanks in advance
--Rich
Pride comes before a fall
Humility comes before honour