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Comment some code

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This commit is contained in:
Isaac Shoebottom 2023-09-26 14:47:40 -03:00
parent 11d9b2e41e
commit d119dc459f
1 changed files with 17 additions and 10 deletions
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27
Assignment2/main.c
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@ -16,23 +16,22 @@ int main() {
while (is_looping) { while (is_looping) {
char input[100]; char input[100];
print_prompt(); print_prompt();
fgets(input, 100, stdin); fgets(input, 100, stdin); // Input for commands
if (strcmp(input, "stop\n") == 0) { if (strcmp(input, "stop\n") == 0) { // Stop command
is_looping = false; is_looping = false;
} }
if (strcmp(input, "onechild\n") == 0) { if (strcmp(input, "onechild\n") == 0) { // One child command
if(fork() == 0) { if (fork() == 0) { // Child process
print_prompt(); print_prompt();
printf("Hello, I am a child process\n"); printf("Hello, I am a child process\n");
exit(0); exit(0);
} } else { // Parent process
else {
print_prompt(); print_prompt();
printf("Hello, I am a parent process\n"); printf("Hello, I am a parent process\n");
wait(NULL); wait(NULL);
} }
} }
if (strcmp(input, "addnumbers\n") == 0) { if (strcmp(input, "addnumbers\n") == 0) { // Add numbers command
int number = 1; int number = 1;
int send_to_child[2]; int send_to_child[2];
int receive_from_child[2]; int receive_from_child[2];
@ -44,26 +43,34 @@ int main() {
while (number != 0) { while (number != 0) {
// Read the numbers from the send_to_child pipe // Read the numbers from the send_to_child pipe
read(send_to_child[0], &number, sizeof(int)); read(send_to_child[0], &number, sizeof(int));
// Add the number to the subtotal
subtotal += number; subtotal += number;
print_prompt(); print_prompt();
printf("The subtotal is %d\n", subtotal); printf("The subtotal is %d\n", subtotal);
// Write the sum to the receive_from_child pipe // Write the sum to the receive_from_child pipe
write(receive_from_child[1], &subtotal, sizeof(int)); write(receive_from_child[1], &subtotal, sizeof(int));
} }
exit(0); exit(0);
} } else {
else {
int total = 0; int total = 0;
while (number != 0) { while (number != 0) {
print_prompt(); print_prompt();
printf("Please input a number, 0 to terminate: "); printf("Please input a number, 0 to terminate: ");
// Read the number from the user, and convert it to an int
char buffer[100]; char buffer[100];
fgets(buffer, 100, stdin); fgets(buffer, 100, stdin);
number = atoi(buffer); number = atoi(buffer);
// Display what was entered
print_prompt(); print_prompt();
printf("You entered %d\n", number); printf("You entered %d\n", number);
// Write to child process
write(send_to_child[1], &number, sizeof(int)); write(send_to_child[1], &number, sizeof(int));
// Read the total from the child process
read(receive_from_child[0], &total, sizeof(int)); read(receive_from_child[0], &total, sizeof(int));
} }
print_prompt(); print_prompt();