String to int array conversion in C programming

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October 22nd, 2012, 12:46 AM

Cprogrmmer

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String to int array conversion in C programming

Hi
I need to know how can I convert a string into an int array and then int array into string array.

void readArr(int MD[], int MQ[])
{
int i, b, val;
int array[4];
char string1[4];
char string2[4];
printf("\nEnter the value of Multiplicant: ");
gets(string1);
/* string1 is "0011" and I need it to convert as
array[4]={0,0,1,1} */

for (int i=0; i< string1.length; i++)
{
array[i] = Integer.ParseInt(string1[i]);
}
}

I am getting problem in my code. I don't know how to write a code for converting int array into string.

thank you in advance

October 22nd, 2012, 03:52 AM

Technovicez

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#include<stdio.h>
#include<conio.h>

void main()
{
int i, b, val;
int array[4];
char string1[4];
char string2[4];
printf("\nEnter the value of Multiplicant: ");
gets(string1);

for (i=0; i< strlen(string1); i++)
{
array[i] = (int)string1[i]-'0';
}

for(i =0;i<strlen(string1);i++)
{
printf("%d",array[i]);
}
getch();

}

October 22nd, 2012, 05:49 AM

G4143

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Wow gets()

Code:

gets(string1);

Right from my help files -

Code:

Never use gets().  Because it is impossible to tell without knowing the data in
 advance how  many  characters gets()  will  read,  and  because  gets() will
 continue to store characters past the end of the buffer, it is extremely
 dangerous to use.  It has been used to break computer security.  Use fgets()
 instead.

As for converting int to strings and strings to int, I would check out the functionality of sprintf().

October 22nd, 2012, 02:09 PM

dwise1_aol

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Quote:

Originally Posted by Cprogrmmer

= Integer.ParseInt(string1[i]);

That's not C, but rather it's C#. Though the rest of the code is not C# but rather C. That mixing of two different languages only makes your request even more confusing than it already is.

What are you trying to do?

Quote:

Originally Posted by Cprogrmmer

I don't know how to write a code for converting int array into string.

Simple, use sprintf. And if you're going to try to do it with a for-loop, then consider sprintf plus strcat.

Though of course if we could figure out what you're trying to do, we could offer better suggestions.

And also, use code tags! Eg:

Code:

void readArr(int MD[], int MQ[])
{ 
    int i, b, val;
    int array[4];
    char string1[4];
    char string2[4];

    printf("\nEnter the value of Multiplicant: "); 
    gets(string1);
    /* string1 is "0011" and I need it to convert as 
    array[4]={0,0,1,1} */

    for (int i=0; i< string1.length; i++)
    { 
        array[i] = Integer.ParseInt(string1[i]);
    }
}

There is great value in enabling us to read your code.

Last edited by dwise1_aol : October 22nd, 2012 at 02:12 PM.

String to int array conversion in C programming

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