IndiaBIX

C Programming - Strings - Discussion

Discussion Forum : Strings - General Questions (Q.No. 7)
Strings
7.
Which of the following function is correct that finds the length of a string?
int xstrlen(char *s)
{
    int length=0;
    while(*s!='\0')
    {    length++; s++; }
    return (length);
}

int xstrlen(char s)
{
    int length=0;
    while(*s!='\0')
        length++; s++;
    return (length);
}

int xstrlen(char *s)
{
    int length=0;
    while(*s!='\0')
        length++;
    return (length);
}

int xstrlen(char *s)
{
    int length=0;
    while(*s!='\0')
        s++;
    return (length);
}
Answer: Option
Explanation:

Option A is the correct function to find the length of given string.

Example:

#include<stdio.h>

int xstrlen(char *s)
{
    int length=0;
    while(*s!='\0')
    { length++; s++; }
    return (length);
}

int main()
{
    char d[] = "IndiaBIX";
    printf("Length = %d\n", xstrlen(d));
    return 0;
}

Output: Length = 8

Discussion:
17 comments Page 2 of 2.
Devi achsah said:   8 years ago
I don't know exactly. But I can share I what know. In this program xstrlen is only the name of the function.
Marcos said:   8 years ago
What exactly xstrlen() do than strlen()? Explain.
Vivek ladhe said:   6 years ago
@Akshay.

strlen is a std library function.
xstrlen is a user-defined function.
Abay said:   6 years ago
what do strleni(); do? Please explain.
Ahmed Shindy said:   3 years ago
"IndiaBix" length is 9 including the null termination character.

Am I right? Anyone, please clarify.
(1)
Harsh said:   3 years ago
@Ahmed;

Strlen gives output of string length excluding null character.
Shendu said:   1 year ago
It's a very good website for gathering the knowledge.

Also, it is helpful for the placement. Thanks all.
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