Need help knowing exactly what values the for loops and if/else statements are c

Question

Need help knowing exactly what values the for loops and if/else statements are checking agains...if you can clearly explain the steps the code is taking it would be very appreciated...the application method will be posted below the part7(int*x) method. The explode(70) call is a method placed outside of the this class which cannot be accessed, if the correct values entered by the user do not pass the comparison tests, the program exits and says "bomb exploded" if the values do pass the comparison checks, it prints "bomb defused"

void part7(int *x){
int y = 19;
int *z = &y;
int k;

const int bufSize = 12;
char buffer[bufSize];

*z -= 3;

readInput(buffer, bufSize);

/* atoi takes a string representation of a number (e.g. "1234") */
/* and converts it to an int representation of the number (e.g. 1234) */
k = atoi(buffer);

if(k + *x != y)
explode(70);

}

-----------------------------------------------------------------------------------------

The bomb method

void theBomb(){
const int bufSize = 10;
char buffer[bufSize];
int result;

printf("Enter the stage 1 password: ");
part1();
printf("Stage 1 defused. ");

printf("Enter the stage 2 password: ");
result = part2();
printf("Stage 2 defused. ");

printf("Enter the stage 3 password: ");
part3();
printf("Stage 3 defused. ");

printf("Enter the stage 4 password: ");
part4(result);
printf("Stage 4 defused. ");

printf("Enter the stage 5 password: ");
part5(buffer, bufSize);
printf("Stage 5 defused. ");

printf("Enter the stage 6 password: ");
part6(buffer, bufSize);
printf("Stage 6 defused. ");

printf("Enter the stage 7 password: ");
part7(&result);
printf("Stage 7 defused. ");

printf("The entire bomb has been defused. ");
}

Explanation / Answer

void part7(int *x){
/* int above line part7 us a method with return type and it has an argument which is a
int type pointer. x hold the address of an integer passed by the function from where
function part7 is invked
*/
int y = 19;
//y is a int type variable with value 19
int *z = &y;
//intialization of an integer type pointer which holds the address of y
int k;
// a int type variable is defined
const int bufSize = 12;
/* here a constant type integer bufSize is declared */
char buffer[bufSize];
//defination of a string with size = 12
*z -= 3;
/*z holds the address of y. meaning of this line is
y = y - 3;now y = 19 - 3 = 16
readInput(buffer, bufSize);
//here a readInput function is called which have arguments bufSize(12) and a string
// or address of first element
/* atoi takes a string representation of a number (e.g. "1234") */
/* and converts it to an int representation of the number (e.g. 1234) */
k = atoi(buffer);
/* k will hold the value return by atoi function our string buffer is not initialize in
this method so we can't say what will be the value of k */
if(k + *x != y)
//here *x is the value whose address is stored in pointer x
explode(70);
//if condition is true then explode function will be called with argument 70
}

-----------------------------------------------------------------------------------------
The bomb method
void theBomb(){
const int bufSize = 10;
/* here a constant type integer bufSize is declared */
char buffer[bufSize];
//defination of a string with size = 10
int result;
//a result variable of int type is defined
printf("Enter the stage 1 password: ");
part1();
//part1() function is called
printf("Stage 1 defused. ");
printf("Enter the stage 2 password: ");
result = part2();
//result hold the value returned by part2()
printf("Stage 2 defused. ");
printf("Enter the stage 3 password: ");
part3();
//part3() function is called
printf("Stage 3 defused. ");
printf("Enter the stage 4 password: ");
part4(result);
//part4() function is called which take argument of int type value result
printf("Stage 4 defused. ");
printf("Enter the stage 5 password: ");
part5(buffer, bufSize);
//part5() function is called which take two arguments buffer(string) and buffsize(stringSize)
printf("Stage 5 defused. ");
printf("Enter the stage 6 password: ");
part6(buffer, bufSize);
//part5() function is called which take two arguments buffer(string) and buffsize(stringSize)
printf("Stage 6 defused. ");

printf("Enter the stage 7 password: ");
part7(&result);
//part7() FUNCTION is call which take address of result as argument
printf("Stage 7 defused. ");
printf("The entire bomb has been defused. ");
}

/*Anyone can not know without seeing explode() funtion and other calling function
like part1(),part2(),..that what program will do..I tried to give explanation of each line by the reference
of given code
*/

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.