Create program and prompt me to enter a dollar amount between 0 and 999.99999 as

Question

Create program and prompt me to enter a dollar amount between 0 and 999.99999 as a C-string or X to exit. Loop unit I enter X to exit.

Use a C-string for the input amount and related method processing. Review section 10.4. This implies you will have the following:

#include <cstring>   

#include <string> may be needed in Visual Studio, but still use C-String functions.

Create a method that will use the functions described in Chapter 10. It is OK to use a globally defined char array. You must call this method to produce the formatted results. The program must modify or build a C-String in this format. Display the C-String created.

1. Include leading $ sign.

2. Must have a single decimal point with 2 digits after the decimal. If the amount had extra digits, then the result is a truncated value.

Explanation / Answer

Code:

#include <iostream>

#include<cstring>

char amount[9]; //global array declaration

int main() {

char dollorSign[10] = {'$'}; //local variable declaration

char afterdecimal[3];

char resultedAmount[10];

int i = 0;

int lengthAfterDecimal = 0;

int lengthOfAmount = 0;

int DifferencebWdecimalPart = 0;

printf("Enter the amount ");

scanf("%s", &amount); // Reading input from STDIN

strcat(dollorSign,amount); // Concatinating $ sign with the amount entered.

lengthOfAmount = strlen(dollorSign); //getting length of concatinated string

char *amountAfterDecimmal = strchr(dollorSign, '.'); //getting substring devided with .

if(amountAfterDecimmal == NULL) //checking if string contains any decimal value

{

strcat(dollorSign,".00"); //if not, inserting decimal values t string

lengthOfAmount = strlen(dollorSign);//getting updated length of string

amountAfterDecimmal = ".00";

}

lengthOfAmount = strlen(dollorSign);

lengthAfterDecimal = strlen(amountAfterDecimmal);

DifferencebWdecimalPart = lengthOfAmount - lengthAfterDecimal;

for(i = 0 ; i < DifferencebWdecimalPart + 3; i++) //looping through the string

{

if((dollorSign == NULL) || (dollorSign[i] == ''))//checking if any value is there at index i

{

dollorSign[i] = '0'; // if index i has no value, inserting 0

}

resultedAmount[i] = dollorSign[i]; //creating a new resulted string

}

printf("Result amount is %s ", resultedAmount); //printing the resulted string

}

input:

9243.596

output:

Result amount is $9243.59

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