FINISHED - lottery program
heyho im finished with my first complete program in C.
heres the source code:
Code:
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
#define AUTHOR "threadhead"
#define SEED 49
#define FILENAME "lotto.txt"
FILE *file;
int remember(int val, int *saved, int size);
int write(int input[5]);
int menu(void);
int case3(void);
void case2(void);
void case1(void);
int rando(void);
/*-------------------------------------------------------*/
int main()
{
srand(time(NULL));
switch(menu())
{
case 1:
{
case1();
break;
}
case 2:
{
case2();
break;
}
case 3:
{
case3();
break;
}
}
return 0;
}
/*-------------------------------------------------------*/
int menu()
{
int choice=0;
printf("\n\n%s wrote this program mails go to [email protected]\n", AUTHOR);
puts("welcome to your lottery\n");
puts("--------------------------\n\n");
puts("1. show all your lottery numbers\n");
puts("2. write down some of your lottery numbers\n");
puts("3. generate some lottery numbers by random\n");
puts("choose: ");
scanf("%d", &choice);
return choice;
}
/*-------------------------------------------------------*/
int rando()
{
return ((rand()%SEED)+1);
}
/*-------------------------------------------------------*/
void case1()
{
int input[5], i;
file = fopen(FILENAME, "r");
if (file == NULL)
puts("an error occured");
else
{
for(i=0;i<6;i++)
{
fscanf(file, "%d", &input[0]);
fscanf(file, "%d", &input[1]);
fscanf(file, "%d", &input[2]);
fscanf(file, "%d", &input[3]);
fscanf(file, "%d", &input[4]);
fscanf(file, "%d", &input[5]);
}
fclose(file);
printf("first number: %d\n", input[0]);
printf("second number: %d\n", input[1]);
printf("third number: %d\n", input[2]);
printf("fourth number: %d\n", input[3]);
printf("fifth number: %d\n", input[4]);
printf("sixth number: %d\n", input[5]);
}
}
/*-------------------------------------------------------*/
void case2()
{
int input[5];
puts("enter your 6 numbers: ");
scanf("%d", &input[0]);
scanf("%d", &input[1]);
scanf("%d", &input[2]);
scanf("%d", &input[3]);
scanf("%d", &input[4]);
scanf("%d", &input[5]);
write(input);
}
/*-------------------------------------------------------*/
int case3()
{
int i, a;
int saved[6];
i=0;
while (i<6)
{
a = rando();
if ( !remember(a, saved, 6))
{
saved[i++] = a;
}
}
puts("your numbers are: ");
for (i=0;i<6;i++)
{
printf("%d ", saved[i]);
}
printf("\nyour bonus number is: \n%d\n", rando());
return 0;
}
/*-------------------------------------------------------*/
int write(int input[5])
{
file = fopen (FILENAME, "w+"); //open file for write access
if (file == NULL)
{
puts("an error occured!");
return 1;
}
else
{
fprintf(file, "%d ", input[0]);
fprintf(file, "%d ", input[1]);
fprintf(file, "%d ", input[2]);
fprintf(file, "%d ", input[3]);
fprintf(file, "%d ", input[4]);
fprintf(file, "%d ", input[5]);
fclose(file);
}
return 0;
}
/*-------------------------------------------------------*/
int remember(int val, int *saved, int size)
{
int i;
for(i=0;i<size;i++)
{
if (saved[i]== val)
{
return 1;
}
}
return 0;
}
i didnt have time to complete the source code with comments, i hope you'll
find your way yourself.
this is a lotto program what serves you with random generated lotto numbers.
you can enter your own ones and safe them to a file, once done you can call these
values back again.
thats all the program does.
remember:
if you win with the numbers generated by this program, i want you to share
the price you won with me. :D
any feedback is welcome!
threadhead
