How would you do this conversion?

[redruby147]

Say you have the argument to main in the form of ./program 447 758. How would the separation of those two numbers into integers be done for example to gain the result of.

first_num[0] = 4;
first_num[1] = 4;
first _num[2] = 7;

second_num[0] = 7;
second_num[1] = 5;
second_num[2] = 8;

Its driving me mad, i know its simple but can't seem to grasp it. Actual code would be extremely appreciated. Thanks

[itCbitC]

For starters try to come up with an algorithm for doing this task, coding it will become a lot simpler afterwards.

[creeping death]

those argurment are string already

argv[1][0] will be 4 argv[1][2] will be 7 and so on

[vart]

those argurment are string already

argv[1][0] will be 4 argv[1][2] will be 7 and so on

actually it will be '4', '7' etc

to convert these chars to int -
argv[1][0] - '0' should be used

[creeping death]

actually it will be '4', '7' etc

que?

to convert these chars to int -
argv[1][0] - '0' should be used

[matsp]

The numeric value of each character will be the '4' and '7'. To make that into an integer, one needs to subtract the value of '0'.

--
Mats

[creeping death]

well, thats what i said in my first post ...

[vart]

well, thats what i said in my first post ...

not even close

[creeping death]

just because i did not put ' ' does not mean that i imply that its already an integer, and you putting it does not imply it to be a character. i did mention that it is a "string"...which is an array of characters.

[redruby147]

Solved, i stumbled upon this

C: How can I split a number into digits? - Yahoo! Answers

and then did this

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAX 5

int main (int argc, char *argv[])
{
	int val;
	int whole1; /*stores the whole number*/
	int seperated_whole1[MAX];/*seperate digits of whole1*/
	int i = MAX - 1;/*for use in the seperation loop*/

	whole1 =  atoi(argv[1]);
	/*
	*This loop splits the whole1 integer into seperate digits for the array in preperation for
	*individual manipulation
        */
	
        while (whole1 > 0)
	{
		seperated_whole1[--i] = whole1 % 10;
		whole1 /= 10;
	}


	printf("%d %d %d %d\n", seperated_whole1[0], seperated_whole1[1], seperated_whole1[2], seperated_whole1[3]);
	return 0;
}

I hope someone who has the same problem comes across this

[vart]

just because i did not put ' ' does not mean that i imply that its already an integer, and you putting it does not imply it to be a character. i did mention that it is a "string"...which is an array of characters.

yes, yes... and that you come to C programming does not imply that you are talking about C language...


bla-bla-bla...

[creeping death]

yes, yes... and that you come to C programming does not imply that you are talking about C language...


bla-bla-bla...

yeah , talking *about* C language NOT talking *in* C language.