C Programming - Library Functions - Discussion

Discussion Forum : Library Functions - General Questions (Q.No. 3)

Library Functions

Which standard library function will you use to find the last occurance of a character in a string in C?

strnchar()

strchar()

strrchar()

strrchr()

Answer: Option

Explanation:

strrchr() returns a pointer to the last occurrence of character in a string.

Example:


#include <stdio.h>
#include <string.h>

int main()
{
    char str[30] = "12345678910111213";
    printf("The last position of '2' is %d.\n",
            strrchr(str, '2') - str);
    return 0;
}

Output: The last position of '2' is 14.

Discussion:

18 comments Page 2 of 2.

Suren said: 1 decade ago

Why we are putting -str there in printf statement? Please help me.

Neha said: 1 decade ago

Thanks shrikant it is really very easy when you explained it.

RENU GURPREET said: 1 decade ago

Thanks @Srikanth.

Sonu said: 1 decade ago

Rightly said srikanth.

Kiran said: 1 decade ago

Excellent srikanth.

Ravi said: 1 decade ago

Thanks srikanth.

Athinivas said: 1 decade ago

@Pruthvi strrchr() returns pointer to last(first in terms of position)occurence of char u given....so if we subtract the add of that returning pointer with the actual one...we get position...(Since char occupies a single byte)....Thanq u..

Pruthvi said: 1 decade ago

Why -str is used?

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