[SOLVED] printf...integer array

[S15_88]

Having a total mental block! I've got a program that writes an integer array of 100 containing 1 to 100 to a binary file using fwrite(). then i have to read the file into another array and print the contents.

i can;t for the life of me remember how to print the contents of an array!
here's my code:


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

int main()
{
int i, a1[100], a2[100];
i=0;

FILE * file;
file = fopen("file.txt", "w");

for(i=0; i<0; i++)
{
a1[i] = i;

}
fwrite(a1, sizeof(int), 100, file);
fclose(file);

file = fopen("file.txt", "r");
fread(a2, sizeof(int), 100, file);

/*Print Contents Here*/

fclose(file);

return 0;
}


if i do:

for(i=0;i<100;i++)
{
printf("%d\n", a2[i]);
}

i'm printing the value of i at that point...not the value of a2 at point i

i'm just confused haha ugh. any help would be greatly appreciated

Thanks, Alain

[yabbadabbadont]

Your code to print the values is correct. The problem is that you have a bug in the first "for" loop.

for(i=0; i<0; i++)
{
a1[i] = i;

}

Fix that and you will fix the other. ;)

[PaulFr]

1. First you have a problem in your first for loop. Try changing this
for(i=0; i<0; i++)
{
a1[i] = i;
} to
for(i=0; i < 100; i++)
{
a1[i] = i + 1000;

} (see the bold parts) and then add your second for loop that you tried and see what you get. Good luck !

P.S. The i + 1000 is just so you can check that the output is not i, but actually a2[i].

[S15_88]

bahh haha thanks alot! i had a total mental block! hahaha