#include<stdio.h>

int find(char *, char);

int main(int argc, char **argv)
{
	char c;
	int check;
	if (argc == 1) printf("Should be at least one command line argument supplied after the file name\n");
	else
	{
		printf("Enter a character to search the string\n");
		c = getchar();
		check = find(*(argv + 1), c);
		if (check != -1) printf("First position of the character within the string is %d\n", check);
		else printf("Character not found\n");
	}
	return 0;

}

int find(char *inputString, char c)
{
	int i = 0;
	int r = -1;
	while (*(inputString + i) != '\0')
	{
		if(*(inputString + i) == c)
		{
			r = i;
			break;
		}
		i++;
	}
	return r;
}