Converting string to int in Turbo C

Question

Good day! Can I ask how to convert a string to int in turbo C. For example:

void comp()
{
    FILE *fp;
    int i,x;
    long int deci;
    char bin[8];
    char *str=0;
    char buf[1024];

    fp=fopen("C:\enc.txt","w");

    printf("Enter a text: ");
    scanf("%[^\n]",str);
    init(str);

    for(i=0;i<128;i++)
    {
        if(code[i])
        {
            printf("'%c': %s\n",i, code[i]);
        }
    }

I'm making a binary code here with the use of string.

    encode(str, buf);
    deci=decimal(buf);
    printf("%li", deci);

    fprintf(fp,"%s",deci);

    fclose(fp);

}

Here is the function decimal()

int decimal(long int decimal)
{
    int dc, power;
    power=1;
    ht=0;
    while(decimal>0)
    {
        dc+=decimal%10*power;
        decimal=decimal/10;
        power=power*2;
    }
    return dc;
}

Thanks for the responses!

Take a look stackoverflow.com/a/7021750/1018966

Sandesh
– Sandesh

2015-01-10 11:26:55 +00:00
Commented Jan 10, 2015 at 11:26 — Sandesh
– Sandesh, Commented Jan 10, 2015 at 11:26

shauryachats · Accepted Answer · 2015-01-10 10:19:14Z

2

I'll assume you are reading a stream of integers as string, and want them to be converted into integers.

Create a new integer array. Run a loop and convert each character into an integer.

int *buf = new int[strlen(str)];
for(int i=0; i < strlen(str)-1; ++i)
{
       buf[i] = str[i] - '0';
}

And here you have, all the integer data stored into an integer array.

EDIT:

If you want to store the string into an integer,

long long number = 0;
for(int i = strlen(str) - 2; i >= 0; --i)
{
        number *= 10;
        number += buf[i];
}

edited Jan 10, 2015 at 10:19

answered Dec 24, 2014 at 12:53

shauryachats

10.5k4 gold badges38 silver badges48 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

shauryachats Over a year ago

Yes. You are right. I should have given the limitation from index 0 to index strlen(str)-2. I'll edit it. :)

Abdul.Moqueet · Accepted Answer · 2017-12-07 15:57:55Z

0

I know, I'm little late, but it will definitely help others.

Use built-in function atoi which is available in stdlib.h

#include <stdlib.h>
    char a[2]="10";
    int b = atoi(a) + 5;

answered Dec 7, 2017 at 15:57

Abdul.Moqueet

1,08714 silver badges20 bronze badges

Collectives™ on Stack Overflow

Converting string to int in Turbo C

2 Answers 2

1 Comment

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

1 Comment

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related