C++ Get text and numeric value from a string Post: 302897443

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Top Forums Programming C++ Get text and numeric value from a string Post 302897443 by chacko193 on Monday 14th of April 2014 07:32:03 AM

04-14-2014

Registered User

Try this:

Code:

#include <iostream>
#include <string>

using namespace std;

//Function to convert a character to an integer.
int my_atoi(char chr) {
    int ret;
    switch(chr) {
    case '0' :
        ret =  0;
        break;
    case '1' :
        ret =  1;
        break;
    case '2' :
        ret =  2;
        break;
    case '3' :
        ret =  3;
        break;
    case '4' :
        ret =  4;
        break;
    case '5' :
        ret =  5;
        break;
    case '6' :
        ret =  6;
        break;
    case '7' :
        ret =  7;
        break;
    case '8' :
        ret =  8;
        break;
    case '9' :
        ret =  9;
        break;
    }
    return ret;
}

int main() {
        string my_str = "Hello123";
        string sstr;
        char chr;
        int snum = 0;                //The sub-number.
        float temp_snum;
        int i = 0;
        float j = 0.1;
        int k = 0;

        cout<<"The string is: "<<my_str<<endl;
        while ( my_str[i] != '\0' ) {
            chr = my_str[i];
            cout<<"Got charecter :"<<chr<<endl;

            if( (( chr > 64 ) && ( chr <91 )) || (( chr > 96 ) && ( chr <123 ))) {
                //Check if the character is an alphabet.
                cout<<"Its an alphabet"<<endl;
                sstr += chr;

            } else if (( chr > 47 ) && ( chr < 58)) {
                //Check if the character is a number.
                cout<<"Its a number"<<endl;
                k = my_atoi(chr);
                temp_snum += (j * k);
                j *= 0.1;
            } else {
                printf("Its something else\n");
            }
            i++;
        }

        //Convert the decimal number to an integer.
        j = 0.1/j;
        temp_snum *= j;
        snum = (int) temp_snum;

        sstr += "\0";
        cout<<"The sub-string is: "<<sstr<<endl;
        cout<<"The sub number is: "<<snum<<endl;

        return 0;
}

chacko193

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wscol

wstring(3C)						   Standard C Library Functions 					       wstring(3C)

NAME

       wstring, wscasecmp, wsncasecmp, wsdup, wscol - Process Code string operations

SYNOPSIS

       #include <widec.h>

       int wscasecmp(const wchar_t *s1, const wchar_t *s2);

       int wsncasecmp(const wchar_t *s1, const wchar_t *s2, int n);

       wchar_t *wsdup(const wchar_t *s);

       int wscol(const wchar_t *s);

DESCRIPTION

       These  functions operate on Process Code strings terminated by wchar_t null characters.	During appending or copying, these routines do not
       check for an overflow condition of the receiving string. In the following, s, s1, and s2 point to Process  Code	strings  terminated  by  a
       wchar_t null.

   wscasecmp(), wsncasecmp()
       The  wscasecmp()  function  compares its arguments, ignoring case, and returns an integer greater than, equal to, or less than 0, depending
       upon whether s1 is lexicographically greater than, equal to, or less than s2. It makes the same comparison but compares at most	n  Process
       Code characters. The four Extended Unix Code (EUC) codesets are ordered from lowest to highest as 0, 2, 3, 1 when characters from different
       codesets are compared.

   wsdup()
       The wsdup() function returns a pointer to a new Process Code string, which is a duplicate of the string pointed to by s. The space for  the
       new string is obtained using malloc(3C). If the new string cannot be created, a null pointer is returned.

   wscol()
       The wscol() function returns the screen display width (in columns) of the Process Code string s.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------------------------------------+
       |ATTRIBUTE TYPE		      ATTRIBUTE VALUE		   |
       |MT-Level		      MT-Safe			   |
       +-----------------------------------------------------------+

SEE ALSO

       malloc(3C), string(3C), wcstring(3C), attributes(5)

SunOS 5.11							    29 Dec 1996 						       wstring(3C)

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