55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
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#include "a_train.h"
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struct car* add_car(struct car* first,const char* target) {
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struct car* newcar = calloc(1, sizeof(struct car));
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strcpy(newcar->value, target);
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if(first == NULL){
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first = newcar;
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}
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else{
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struct car *this = first;
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while(this->next != NULL){
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this = this->next;
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}
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this->next = newcar;
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}
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return first;
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}
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void print_train(struct car* first) {
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struct car* this = first;
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if(first == NULL){
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printf("List is empty.");
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return;
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}
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else{
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while(this != NULL){
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printf("%s\n", this->value);
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this = this->next;
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}
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}
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}
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void cancel_train(struct car* first) {
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if(first != NULL){
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cancel_train(first->next);
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free(first);
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}
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}
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struct car* clear_train(struct car* first, const char* target) {
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struct car* this = first;
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while(this != NULL){
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if(this->value == target){
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return NULL;
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}
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this = this->next;
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}
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return first;
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}
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