While and Do While Loops

1. While and do while loops execute a set of instructions until a certain statement is evaluated as false.
2. General form of a while loop:

   while (this is true) { ...do this... }

   
   
3. To guarantee the code executes at least one time, use do while

   do { ...do this... } while (this is true)

   
   

For Loops

1. A for loop is appropriate in cases where the loop is based on a counter
2. The for statement takes 3 arguments: The initial value for the counter variable, the test condition, and the method of incrementing the counter variable.
3. As an example, the following program prints the numbers 1 to 10.

   #include <stdio.h> int main() { int numb; for (numb = 1; numb <= 10; numb++ ) { printf("%d\n",numb); } return 0; }

   Source File | DOS Executable (run from DOS prompt)

   
   
4. As a side note, numb++ is the same as numb = numb + 1