如何通过MPI_Send发送整数数组？

I'm trying to create a program in regular C that divides an integer array equally between any amount of process. For debugging purposes I'm using an integer array with 12 numbers and only 2 process so that the master process will have [1,2,3,4,5,6] and the slave1 will have [7,8,9,10,11,12]. However I'm getting an error saying: I'm trying to create a program in regular C tha