KwickClips C

C: 35 short revision clips

One idea per clip, with the answer written out underneath. Each clip links back to the full C lesson it came from.

Why is C still used?42 secWhere does a C program start running?41 secWhich file does compiling make?44 secWhat does gcc do?43 secIs roll no a valid name?43 secWhy do some books say int is 2 bytes?44 secWhat must come before using a variable in C?41 secWhat happens if you assign to a const?40 secWhat does %.1f print for 87.5?46 secWhat is & called?39 secDoes getchar need a format specifier?41 secWhat does printf("%d", 2.5) print?43 secWhat does % give?43 secAre a++ and ++a the same?43 secWhat does 6 & 3 give?42 secWhy is 20 - 5 - 3 equal to 12?43 secWhat prints for m = 20?44 secWhat prints for 75?40 secWhat does break do in a switch?43 secWhat does goto do?38 secWhich loops are entry controlled?41 secWhich loop handles columns?41 secWhat does continue do?39 secWhat is 5! ?42 secWhat are the four parts of a definition?41 secDoes a prototype have a body?42 secWhich call changes x and y?43 secHow many values can return send?37 secWhere does a local variable live?41 secWhat is lifetime?40 secWhich storage classes start at zero?44 secWhat is the default storage class?41 secWhat should you write first?42 secWhat does f(5) return?43 secWhich is usually faster?41 sec