You need to build it first - and the code is wrong too. This is the correct[ed] code:
#include<stdio.h> int main () { char name[20]; float score1, score2, score3, avg; printf ("Please Enter your name:\n"); scanf ("%s", name); printf ("Please enter you first score: "); scanf ("%f", &score1); printf ("Please enter you second score: "); scanf ("%f", &score2); printf ("Please enter you third score: "); scanf ("%f", &score3); avg = score1 + score2 + score3 / 3; printf ("\n\n Name: %s\n", name); printf ("score1: %-5.1f\n", score1); printf ("score2: %-5.1f\n", score2); printf ("score3: %-5.1f\n\n", score3); printf ("Average: %-5.1f\n\n", avg); return 0; } Now do: gcc -o example4 example4.32.c then to run it: $ ./example4 Please Enter your name: nick Please enter you first score: 13 Please enter you second score: 14 Please enter you third score: 16 Name: nick score1: 13.0 score2: 14.0 score3: 16.0 Average: 32.3 -- gcc header file broken or something. https://bugs.launchpad.net/bugs/297209 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs