How to convert char to int number in C language ?

To Convert char(Character) Number to int (Integer) in C Language

 

Char - > Int

Introduction :

// Credit to logical.blogspot.com 
// Originally created

 

The conversion can by done by simple programming in c language. It's an easy trick prepared by logical.blogspot.com  . Before proceeding to conversion of char to int of character number. we must have knowledge about ASCII numbers , basic c language and c programming , functions , loops and data types as well as exponent of any numbers . Among them most essential thing is ASCII numbers.

 

If you have good knowledge about ASCII numbers , you will able to solve the conversion very quickly. ASCII numbers of 0 to 9 are : 48 to 57 respectively.

If you have good knowledge about the numbers you can solve easily , for example : 123 = 1 X (10)^2 + 2 X (10)^1 + 3 X (10) ^0

 

Basics in c language : array , data types, for and while loops , increments. 

 

You need knowledge about stack. Push , pop , show operation.

 

 

 

 

 

 

 

 C language code :

 

 

 

// Credit to logical.blogspot.com 
// Originally created

#include <stdio.h>
int sq(int,int);

char stack[10];

int main() {
	
	int i=0,x;

	int CharToNum, AddNumNum=0 , exponent=-1; 

	int NumChar=0;
	
	printf("Enter any char interger :\n");
	
	gets(stack);
	
	printf(" Your expression is : %s\n ",stack);
	
	
	
	while(stack[i] != '\0')
	{
		if ( stack[i] >=48 &&  stack[i] <= 57)
			exponent++;
		i++;
	}
	


	i=0;

	while(stack[i] != '\0')
	{

		if ( stack[i] >=48 &&  stack[i] <= 57)
		{

			CharToNum = stack[i] - '0';

			NumChar = NumChar+(CharToNum*sq(10,exponent));

			exponent--;
		}

		i++;
	}
	
	printf("Your integer : %d",NumChar);
}

int sq(int num , int power)
{
	int i , sqn = 1;

	if (power == 1)
		return num;

	for (i=0;i<power;i++)
		sqn = sqn*num;

	return sqn;
		
}

 

 

 Output : 

 

 

 

 

 

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