Write a C function void reverse (char *s) that takes a string as input, and reverses the order of its characters and stores in the string. Write a C function int str2int (char *s) that takes string s...

Write a C function void reverse (char *s) that takes a string as input, and reverses the order of its characters and stores in the string. Write a C function int str2int (char *s) that takes string s as parameter and return the integer that s represents. For example, if string s is "123", then the function return integer 123 Write a C function void int2str(int a, char s()) that converts integer a to its string representation and stores in char array s. For example, char ns [11]; int2str (1234, ns); print ("%s", ns); will print 1234. Write a function int POW (int b, int n) that compute the braised to n-th power in O (log n) time. Write functions to process arrays (1D and 2D), select sort, and quick sort. Write functions to process strings.