Question

How to use strchr() function to return a pointer to the first occurrence of a character in string in C

Answer 1

#include <stdio.h>
#include <string.h>
  
int main(void)
{
    char s[] = "Unreal Engine 4";
    char *p;
     
    p = strchr(s, 'a');
    printf("found 'a' from: %s\n", p);
      
    return 0;
}
  
   
/*
     
run:
     
found 'a' from: al Engine 4
 
*/

 

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Answer 2

#include <stdio.h>
#include <string.h>
 
int main(void)
{
    char s[] = "Unreal Engine 4";
	char *p;
	
	p = strchr(s, 'a');
	printf("found 'a' in index: %d\n", (int)(p - s));
     
    return 0;
}
 
  
/*
    
run:
    
found 'a' in index: 4

*/

 

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