Interested to Buy Any Domain ? << Click Here >> for more details...
Write code for atoi(x) where x is hexadecimal string.
- 5 Answers
- 26807 Views
- Adobe, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / john huang
int n=strlen(x) // where x is pointer to hex string
int sum=0;
int leftshift=0;
while(n>0)
{
if((x[n-1]>='0') && (x[n-1]<='9'))
sum+=(x[n-1]-'0')<<leftshift;
if((x[n-1]>='A') && (x[n-1]<='F'))
sum+=(x[n-1]-'A'+10)<<leftshift;
if((x[n-1]>='a') && (x[n-1]<='f'))
sum+=(x[n-1]-'a'+10)<<leftshift;
n--;
leftshift+=4;
}
| Is This Answer Correct ? | 7 Yes | 3 No |
Answer / mohammed sardar
int n=strlen(x) // where x is pointer to hex string
int sum=0;
int leftshift=0;
while(n>0)
{
if((x[n-1]>='0') && (x[n-1]<='9'))
sum+=(x[n-1]-'0')<<leftshift;
if((x[n-1]>='A') && (x[n-1]<='F'))
sum+=(x[n-1]-'A'+10)<<leftshift;
if((x[n-1]>='f') && (x[n-1]<='f'))
sum+=(x[n-1]-'a'+10)<<leftshift;
n--;
leftshift+=4;
}
| Is This Answer Correct ? | 10 Yes | 7 No |
Hi,
Refer below link to know how atoi() lib fuction works.
http://www.cppreference.com/wiki/c/string/atoi
And find the equalent code which i have written here.
#include<stdio.h>
#include<conio.h>
int MyAtoi(char *cptr);
main()
{
/*Give different inputs like "12.3432", "a4523"," 123"
"abcd", "1234f" and find the qualent output*/
char *cptr = "123445";
printf("INTEGER EQU IS: %d\n", MyAtoi(cptr));
getch();
}
int MyAtoi(char *cptr)
{
int iptr = 0;
while((*cptr != '\0') && ((*cptr >= 48 && *cptr <= 57) ||
(*cptr == 32)))
{
if(*cptr != ' ')
iptr = (iptr * 10) + (*cptr - 48);
cptr++;
}
return iptr;
}
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / audrius
long l = strtol(string, NULL, 16);
//or, if you need unsigned (which you usually do with hexes)
unsigned long ul = strtoul(string, NULL, 16);
| Is This Answer Correct ? | 1 Yes | 0 No |
What is a file descriptor in c?
Why doesn't C support function overloading?
What is floating point constants?
what is an inline fuction??
What is bubble sort in c?
What are the different types of objects used in c?
any function have arguments one or more OR not . it is compulsary a) any function compulsary have one or more arguments b) any function did not have arguments. It is not compulsary c) it is optional it is not compulsary d) none of the above
What are identifiers in c?
#include<stdio.h> void main() { char *str; long unsigned int add; str="Hello C"; add=&str[0]; printf("%c",add); } What is the output?
What are identifiers c?
How can I implement opaque (abstract) data types in C? What's the difference between these two declarations? struct x1 { ... }; typedef struct { ... } x2;
what is the difference between postfix and prefix unary increment operators?
C 
