Loops in C
All about loops in C
Notes
notes
While Loops
The while construct has a guard condition tested on entry to loop:
while (condition) {
statements;
}
Do-While Loops
The do .. while construct has the guard condition tested at the end of the loop:
do {
statements;
} while (condition);
For loop
The for construct is a super-charged while loop, with embedded initialization and stepping of the loop control variable:
for (initial value; condition; incrementation or decrementation ) {
statements;
}
Break Statement
A break statement in a loop will immediately exit the loop.
Continue Statement
A continue statement in a loop will immediately end the current loop and skip to the next iteration.
Running the Examples
See example.c for details. It runs simple tests of all combinations of syntax. A makefile compiles and runs:
$ make
gcc -Wall -O0 example.c -o example
./example
===== test_while
===== test_break_while
===== test_continue_while
===== test_do_while
===== test_break_do_while
===== test_continue_do_while
===== test_for
===== test_break_for
===== test_continue_for