1. Write a C function that takes a string parameter and returns the length of the string as an integer without using any library functions. 1 int main() { 2 3 char *c; 4 char y = 'a'; 5 C = &v; 6 char d = v; 7 v = v + 1; 8 9 printf("%d ", v); 10 printf("%d ", *c); 11 printf("%d ", d); 12 printf("%c ", v); 13 14 return 0; 15 } E.g. int string_len(char str[]) 2. What is printed when the C program on the right is executed