28. Write a function that accepts a string s1 and a character c1 and returns the index of the first occurrence of c1 in s1. If the character c1 does not exist in the s1 then the function needs to return -1.

29.Which of the two functions correctly compute the length of the input string? Explain what the problem is, if one exists, in each of the two functions

1 int myStrLength1(char *s)

{

int length =0;

while (*s != \0) s++;

length = s;

return(length);

}

2 int myStrLength2(char *s)

{

int length =0;

for (; s[length]!=\0; length++,s++);

return(length);

}

Please write the code in C