1, input a number of seconds, corresponding to the output of hours, minutes, seconds.
Example: input "4000" (second), and outputs "1 hours 6 minutes 40 seconds."
2, calcd 1-1 / 2 + 1 / 3-1 / 4 + ...- 1/100.
3, write a function, sort of a one-dimensional array. The main function to initialize the array, the function call sequencing, and then outputs the sorted array in the main function.
Extra credit: the elements in a one-dimensional array to complete the add and delete operations.
Example: {1,3,5,2,4,6} for the array a
5 and the input 100, 100 is intended to be inserted in the front 5.
Output 131,005,246
Similar deleted.