A SECOND FLOAT EXAMPLE IN C

cis-lclient01:~/2011/aug30>gcc float.c
#include <stdio.h>
main() {
   float a = 30000000;
   float b = 3;
   float  c; 
   c = a + b - a;
   printf("%f\n", c);
   c = a + b;
   c = c - a;
   printf("%f\n", c);
}
cis-lclient01:~/2011/aug30>gcc equals34.c
cis-lclient01:~/2011/aug30>./a.out
3.000000
4.000000
cis-lclient02:~/2011/aug30>ls -l
total 28
-rwx------ 1 stafford domain users 4853 May 17 15:43 a.out
-rw------- 1 stafford domain users  197 May 17 15:55 float2.c
-rw------- 1 stafford domain users  193 May 17 15:43 float.c
-rw------- 1 stafford domain users  128 May 17 14:58 intover.c
-rw------- 1 stafford domain users  451 May 17 14:18 intover.class
-rw------- 1 stafford domain users  207 May 17 14:34 intover.java
cis-lclient02:~/2011/aug30>