Task 3 (25 points)

Modify head.c so it will display the last 10 lines of a file along with the line numbers. Make sure your program can handle file that has less than 10 lines gracefully. Name your source file task3.c. You program should work like this. hb117@uxb4:~$ gcc -Wall task3.c -o task3 hb117@uxbt:~$ ./task3 TheStarSpangledBanner.txt 26 Oer the land of the free and the home of the brave. 27 28 O thus be it ever when freemen shall stand 29 Between their lovd home and the wars desolation! 30 Blest with victry and peace may the heavn rescued land 31 Praise the power that hath made and preservd us a nation! 32 Then conquer we must, when our cause it is just, 33 And this be our motto - In God is our trust, 34 And the star-spangled banner in triumph shall wave 35 Oer the land of the free and the home of the brave.

5 additional points will be added if your solution only reads the file once.

Here is head.c:

#include #include #include int main(int argc, char *argv[]) { if(argc!=2){ return 1; } char *filename = argv[1]; FILE *input = fopen(filename,"r"); if(input==NULL){ printf("Cannot open %s: %s ", filename, strerror(errno)); return 1; } char line[BUFSIZ]; int count=0; while(1){ fgets(line, BUFSIZ, input); printf("%s", line); count++; if(count==10) break; } return 0;

}