strrchr : <string.h> library function

The function char *strrchr(const char *str, int c); searches for the last occurrence of character c(an unsigned char) in the string pointed by str.

Function prototype of strrchr

char *strrchr(const char *str, int c);
  • str : This is the string to be scanned.
  • c : Character to be searched.

Return value of strrchr

This function returns a pointer to the last occurrence of the character c in the string str. If character c is not found in str, it returns NULL.

C program to show the use of strrchr function

The following program shows the use of strrchr function to search last occurrence of a character in a string.

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

int main()
{
   char string[100], ch;
   char *ptr;

   printf("Enter a string\n");
   scanf("%s", string);
   printf("Enter a character to search\n");
   scanf(" %c", &ch);
   
   ptr = strrchr(string, ch);

   if(NULL == ptr){
      printf("'%c' not found", ch);
   } else {
      printf("Last Occurance of '%c' is at index %d\n", ch, ptr-string);
   }
   
   getch();
   return(0);
}

Program Output
Enter a string
TechCrashCourse
Enter a character to search
C
Last Occurance of 'C' is at index 9
Enter a string
TechCrashCourse
Enter a character to search
C
C not found