How to use getpixel() and setpixel() in C program for selecting pixels

[Rohit Ramesh]

How to use getpixel() and setpixel() in C program for selecting all pixels of an image of a camera? image size is 160*120..

[newb16]

setpixel() is not a part of a C standard, so the formal answer is 'not enough information'. But as setpixel() you mention is most likely related to Borland BGI library, the answer is "you can't " - these functions don't access camera.

[Rohit Ramesh]

Ok. I got an assignment to write C program using getpixel() in order to choose pixels of image..
like getpixel(1,2) will choose pixel of 1st row and 2nd column.. Similarly, to write C program to choose image of size 160*120 in Array using '"while" and "for" loop

[newb16]

Are you expected to write something like this?
for(...) for(...) array[y][x]=getpixel(x,y);
It's still not clear where do you get the image.