input
 

how can i wait input from keyboard?If i would run the program after the user press for example enter,....getch?

What programming language are you referring to?

For example in C you would have something like a printf statement

printf("Please input c to continue\n");
scanf("%d", &option);

scanf would have the terminal wait for the user input and that value would be placed in option. When the user enters c and enter, execution of the program continues.

I hope I understood you correctly.