limit of array

[nabeels786]

	int m[];
	for(int i=0;i<=m[i];i++);
	
	int i=0;
	while(m[i] != '\n'){
		...
		i++;
	}

which one is correct to scan till the ubound of hte array? i know VB has UBound, but i cant seem to figure out how to do it in C++

thanks
-nabeel