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Answer to Question #48602 in C for sol

Question #48602
Write a program that declares a struct to store the data of a baseball player (player’s name, number of home runs, and number of hits). Declare an array of 10 components to store the data of 10 baseball players. Your program must contain a function to input data and a function to output data. Add functions to search the array to find the index of a specific player, and update the data of a player. (You may assume that input data is stored in a file.) Before the program terminates, give the user the option to save data in a file. Your program should be menu driven, giving the user various choices.
Expert's answer
#include <stdio.h>
#include <string.h>

typedef struct{
char name[40];
int homeruns;
int hits;
} player;

void Read(player *players);
void Write(player *players);
void Search(player *players);
void Update(player *players);

int main(){
player players[10];
char menu;
int i;

for (i=0; i<10; i++){
players[i].name[0]=0;
players[i].homeruns=0;
players[i].hits=0;
}

do{
printf(" 1\tLoadfrom file\n 2\tSearch\n 3\tUpdate the data of a player\n 4\tShow the data of a
player\n 5\tSave data\n 0\tExit\n");
fseek(stdin, 0, SEEK_END); scanf("%c", &menu); fseek(stdin, 0, SEEK_END);

switch (menu)
{
case '1': //Load from file
Read(players);
break;
case '2': //Search
Search(players);
break;
case '3': //Update the data of a player
printf("Enter theplayer's index (0..9): ");
scanf("%d", &i); fseek(stdin, 0, SEEK_END);
if ((i>=0)&&(i<=9)){
Update(players+i);
}
else{
printf("The indexis incorrect\n\n");
}
break;
case '4': //Show the data of a player
printf("Enter theplayer's index (0..9): ");
scanf("%d", &i);
if ((i>=0)&&(i<=9)){
printf("%d: %s, %d,%d\n\n", i,players[i].name, players[i].homeruns, players[i].hits);
}
else{
printf("The indexis incorrect\n\n");
}
break;
case '5': //Save data
Write(players);
break;
default:
break;
}
}while (menu!='0');

return 0;
}

void Read(player *players){
char name[200];
FILE *fp;
int i;

printf("Enterfilename: ");
scanf("%s", name);
fp=fopen(name,"rb");
if (fp!=NULL){
i=fread(players, sizeof(player), 10, fp);
printf("%d itemsare read\n\n", i);
fclose(fp);
}
else{
printf("Erroropenig file!\n\n");
}
}
void Write(player *players){
char name[200];
FILE *fp;
int i;

printf("Enterfilename: ");
scanf("%s", name);
fp=fopen(name,"wb");
if (fp!=NULL){
i=fwrite(players, sizeof(player), 10, fp);
printf("%d itemsare write\n\n", i);
fclose(fp);
}
else{
printf("Erroropenig file!\n\n");
}
}
void Search(player *players){
char name[40];
int i, result=-1;

printf("Enter nameof the player: ");
gets(name);

for (i=0; i<10; i++){
if (strcmp(players[i].name, name)==0){
result=i;break;
}
}

if (result>=0){
printf("Index ofthe player: %d\n\n", result);
}
else{
printf("The playerwas not found\n\n");
}
}
void Update(player *players){
printf("Enter aname [%s]: ", players->name);
gets(players->name);
printf("Enter anumber of home runs [%d]: ", players->homeruns);
scanf("%d", &(players->homeruns));
printf("Enter anumber of hits [%d]: ", players->hits);
scanf("%d", &(players->hits));
printf("\n");
}


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