This what I have right now it will not print the first or last number, I'm not sure why it's not
#include <stdio.h>
int main(){
int i, j;
float ar[5] = {12.75, 18.34, 9.85, 23.78, 16.96}, br[5];
float *ptrAr, *ptrBr;
ptrAr = ar;
ptrBr = &br[4];
for ( i = 0; i < 5; i++) {
*ptrBr = *ptrAr;
ptrAr++;
ptrBr--;
}
for ( i = 0; i < 5; i++) {
printf("%5.2f\n", *ptrBr);
ptrBr++;
}
return 0;
}
Your code has undefined behavior, because ptrBr is set to br-1.
That means anything can happen, even the proverbial nasal demons:
ptrBr = &br[4];
for ( i = 0; i < 5; i++) {
*ptrBr = *ptrAr;
ptrAr++;
ptrBr--;
}
Change the loop to this:
ptrBr = br+5;
for(i = 0; i < 5; i++)
*--ptrBr = *ptrAr++;
That will also fix your output, because ptrBr == br at this place now.
reset your ptrBr before your print loop
ptrBr = br;
Just add an additional ptrBr++; after the 1st for loop. Since the last execution of your 1st for loop did an extra ptrBr--;
ptrBr++;
for ( i = 0; i < 5; i++) {
printf("%5.2f\n", *ptrBr);
ptrBr++;
}
return 0;
}
Your program invokes undefined behavior as it access unallocated memory. In fact ptrBr points one element before the array br at the end of loop.
Change your for loop body to
for ( i = 0; i < 5; i++) {
printf("%5.2f\n", *++ptrBr);
}
