20J7 Length of string by using own function and pointer.c

//20 July 22-7
//Find string length by using own funtion by char by char and Pointer  

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

int stringLen(char *);		//function declaration - has int type cz we have to return value of len- has [] to denote array
int stringLen(char *p)		//*p can be used to replace str cz str stores base address
{
	int len=0;		//len is a count variable hence initialised to zero and i is iterative variable
	while(*p!='\0')
	{
		len++;
		p++;		//pointer p is incremented to next address
	}
	return len;
}


void main()
{
	char str[15];
	int len;

	printf("\nEnter string ");
	gets(str);		//string is scanned

	len = stringLen(str);		//functoin stringLen is called passed value of str,
								//len is used to stroe value returned from stringLen functon
	printf("\n Length of the string is %d",len);
	getch();

}