Question

Help with my code:

The code is suppose to read a text file and when u enter the winning lotto number it suppose to show the winner without the user typing in the other text file please help cause when i enter the number the code just end without displaying the other text file

#include <stdio.h>
#include <stdlib.h>

typedef struct KnightsBallLottoPlayer{

char firstName[20];
char lastName[20];
int numbers[6];
}KBLottoPlayer;

int main(){
//Declare Variables
FILE *fp;
int i,j,n,k;

fp = fopen("KnightsBall.in","r");
//
if(fp == NULL){
printf("File Unable to Open");
return 0;
} // End if statement

fscanf(fp,"%d",&n);
KBLottoPlayer *players = (KBLottoPlayer*) malloc(n*sizeof(KBLottoPlayer));

for(i=0; i<n; i++){
fscanf(fp, "%s %s", players[i].firstName, players[i].lastName);
for(j=0; j<6; j++)
fscanf(fp, "%d", &players[i].numbers[j]);
}
fclose(fp);

int lottoNumbers = (int)malloc(6*sizeof(int));

printf("Enter the Winning Lottery Numbers: ");
for(i=0; i<6; i++)
scanf("%d", &lottoNumbers);
fp = fopen("KnightsBall.out", "r");

for(i=0; i<n; i++){
int cnt = 0;

for (j=0; j<6; j++){
for(k=0; k<6; k++){
if(players[i].numbers[j] == lottoNumbers)
cnt++;
}
}
if(cnt <= 2)
continue;

fprintf(fp, "%s %s matched %d numbers and won $", players[i].lastName, players[i].firstName, cnt);

if(cnt==3)
fprintf(fp, "10");
else if(cnt==4)
fprintf(fp, "100");
else if(cnt==5)
fprintf(fp, "10000");
else if(cnt==6)
fprintf(fp, "1000000");
fprintf(fp, ". ");

}

return 0;

}

Answer 1

If you have any doubts, please give me comment...

#include <stdio.h>
#include <stdlib.h>

typedef struct KnightsBallLottoPlayer{

char firstName[20];
char lastName[20];
int numbers[6];
}KBLottoPlayer;

int main(){
//Declare Variables
FILE *fp;
int i,j,n,k;

fp = fopen("KnightsBall.in","r");
//
if(fp == NULL){
printf("File Unable to Open");
return 0;
} // End if statement

fscanf(fp,"%d",&n);
KBLottoPlayer *players = (KBLottoPlayer*) malloc(n*sizeof(KBLottoPlayer));

for(i=0; i<n; i++){
fscanf(fp, "%s %s", players[i].firstName, players[i].lastName);
for(j=0; j<6; j++)
fscanf(fp, "%d", &players[i].numbers[j]);
}
fclose(fp);

int lottoNumbers = (int)malloc(6*sizeof(int));

printf("Enter the Winning Lottery Numbers: ");
for(i=0; i<6; i++)
scanf("%d", &lottoNumbers);
fp = fopen("KnightsBall.out", "w");

for(i=0; i<n; i++){
int cnt = 0;

for (j=0; j<6; j++){
for(k=0; k<6; k++){
if(players[i].numbers[j] == lottoNumbers)
cnt++;
}
}
if(cnt <= 2)
continue;

fprintf(fp, "%s %s matched %d numbers and won $", players[i].lastName, players[i].firstName, cnt);

printf("%s %s matched %d numbers and won $", players[i].lastName, players[i].firstName, cnt);

if(cnt==3){

fprintf(fp, "10");

printf("10");

}
else if(cnt==4){
fprintf(fp, "100");

printf("100");

}
else if(cnt==5){
fprintf(fp, "10000");

printf("10000");

}

else if(cnt==6){
fprintf(fp, "1000000");

printf("1000000");

}
fprintf(fp, ". ");

printf(".");

}

fclose(fp);

return 0;

}