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Adding Huge Numbers in C
Posted Date:
Total Responses: 0
Posted By: RAGESH V R Member Level: Gold Points/Cash: 4
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We know that integer variable can hold a value between -32768 to +32767. So what we will do if we are using a huge value? Then may we will use long qualifier. But the size of the long int is 4 bytes. So what we will do if the number to be added is larger than a value that a long int can accommodate. Then we will use string addition. Store the numbers into a character array and add each digits.
#include
#include
#include
void main()
{
char a[20],b[20],r[21]={""};
int re,c=0,la,lb,i,j,diff=0,l;
printf("Enter 1st No. : ");
gets(a);
printf("Enter 2nd No. : ");
gets(b);
la=strlen(a);
lb=strlen(b);
diff=la-lb;
if(diff<0)
{
diff=-diff;
strrev(a);
for(i=0;i strcat(a,"0");
strrev(a);
}
else
{
strrev(b);
for(i=0;i strcat(b,"0");
strrev(b);
}
printf("%s\n",a);
printf("%s\n",b);
l=strlen(a);
for(i=l-1,j=0;i>=0;i--,j++)
{
re=a[i]-48+b[i]-48+c;
c=re/10;
re=re%10;
r[j]=re+48;
}
if(c>0)
{
r[j++]=c+48;
}
r[j]='\0';
strrev(r);
printf("Sum : %s\n\n",r);
getch();
}
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