CTRL + C and CTRL + Z are interrupt commands, but they are different.
Where, CTRL + C is a forced interrupt program. The CTRL + Z is to suspend the task without end, in the process to maintain the suspended state, at the same time, through the FG restart the front desk interrupted task, you can also use BG to put the interrupted task in the background execution.
(A personal understanding of CTRL + C is equivalent to the Task Manager in the window to end the task; CTRL + Z is equivalent to two windows on the interface, the one that is dimmed, and FG is the equivalent of clicking on the Dark window, which is the equivalent of minimizing that dark window.) )
Ctrl+d represents a special binary value, EOF (which, if not mistaken, should be-1 or end meaning).
PS: If there is any mistake, please point out that I will find time to change
The difference between CTRL + Z, CTRL + C, ctrl+d in CentOS