私は楽しみのためにファンタジー フットボールのドラフト プログラムを書いています。
奇妙な問題に遭遇しました。フィールドに値を割り当てるstruct
と、それが起こりますが、その値は の別のフィールドにも割り当てられますstruct
。乱雑なデバッグprintf
ステートメントについてお詫び申し上げます。
struct
フィールドの割り当てについて明確に理解していません。
コード:
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define TRUE 1
int QB_count = 0;
int RB_count = 0;
int WR_count = 0;
int TE_count = 0;
int DEF_count = 0;
struct Player {
char *name;
char *position;
int age;
int bye_week;
};
int get_name (struct Player *drafted) {
char name[20];
fputs("Enter Player Name: ", stdout);
fflush(stdout);
if (fgets(name, sizeof name, stdin) != NULL){
char *newline = strchr(name, '\n');
if (newline != NULL){
*newline = '\0';
}
drafted->name = name;
printf("You've drafted: %s\n", drafted->name);
}
return 0;
}
int get_position(struct Player *drafted){
char position[20];
int depth;
char *nametemp = drafted->name;
printf("nametemp: %s\n", nametemp);
fputs("Enter Player Position in 'QB/RB/WR/TE/DEF' format: ", stdout);
fflush(stdout);
if (fgets(position, sizeof position, stdin) != NULL){
char *newline = strchr(position, '\n');
if (newline != NULL){
*newline = '\0';
}
drafted->position = position;
if (strcmp(position, "QB") == 0){
QB_count++;
depth = QB_count;
} else if (strcmp(position, "RB") == 0){
RB_count++;
depth = RB_count;
} else if (strcmp(position, "WR") == 0){
WR_count++;
depth = WR_count;
} else if (strcmp(position, "TE") == 0){
TE_count++;
depth = TE_count;
} else if (strcmp(position, "DEF") == 0){
DEF_count++;
depth = DEF_count;
} else {
printf("Please re-enter position information using the format 'QB' or 'qb'\n");
get_position(drafted);
return 0;
}
drafted->name = nametemp;
printf("NAME: %s\n", drafted->name);
printf("You've drafted %s at: %s%d\n", drafted->name, drafted->position, depth);
}
return 0;
}
int get_age (struct Player *drafted){
return 0;
}
int get_bye_week (struct Player *drafted){
return 0;
}
int main (){
int stop = 0;
char text[20];
while (TRUE){
struct Player drafted;
printf("Welcome to the 2012 Draft Day Program\n");
get_name (&drafted);
printf("NAME_MAIN: %s\n", drafted.name);
get_position(&drafted);
printf("You've drafted %s at: %s\n", drafted.name, drafted.position);
get_age(&drafted);
get_bye_week(&drafted);
fputs("Would you like to draft another player?\n"
"Enter '1' for no, '0' for yes\n", stdout);
fflush(stdout);
if(fgets(text, sizeof text, stdin)){
int number;
if (sscanf(text, "%d", &number) == 1){
if (number == 1){
printf("Draft Ended!\n");
break;
}
}
}
}
return 0;
}
結果の出力は次のとおりです。
Welcome to the 2012 Draft Day Program
Enter Player Name: Aaron Rodgers
You've drafted: Aaron Rodgers
NAME_MAIN: Aaron Rodgers
nametemp: Aaron Rodgers
Enter Player Position in 'QB/RB/WR/TE/DEF' format: QB
NAME: QB
You've drafted QB at: QB1
You've drafted QB at: QB
Would you like to draft another player?
Enter '1' for no, '0' for yes
1
Draft Ended!
なぜdrafted.name
「QB」になるのですか?