Thread: Function prototypes

Hi, this is my first post on this site, so hopefully this is correct way of doing things.
I have started typing a piece of code that allows input of two strings that will be placed together. However i have come across this error : "'mystrcat' : cannot convert parameter 1 from 'char [80]' to 'char'" and cant figure out how to correct it.
Any help appreciated.

Code:

#include "stdafx.h"
#include "ctype.h"
#include "string.h"

char mystrcat(char, char);

int main()
{
	char string1[80], string2[80];
	for (;;)
	{
		printf("Enter string1: ");
		scanf("%s", &string1);
		if (!strcmp(string1, "done"))
			break;
		printf("Enter string2: ");
		scanf("%s", &string2);
		printf("String1: %s String2: %s\n", string1, string2);
		printf("Returned string : %s\n", mystrcat(string1, string2));
		printf("String1: %s String2: %s\n", string1, string2);
	}
}

char *mystrcat(char *s, char *p)
	{
	size_t i,j;
    for (i = 0; s[i] != '\0'; i++);
    for (j = 0; p[j] != '\0'; j++)
        s[i+j] = p[j];
    s[i+j] = '\0';
    return s;
	}

Try this:

Code:

char mystrcat(char *, char *);

thank you!
looking at it now, i can see it plain and simple.
i guess it was the age old, you read your work, but see what you think is there