( ulysses | 2012. 05. 29., k – 17:05 )

ulysses@locris:~/Dev$ clang -Wall -o pi pi.c 
pi.c:4:7: warning: type specifier missing, defaults to 'int' [-Wimplicit-int]
const c = 10000;
~~~~~ ^
pi.c:7:17: warning: unused variable 'a' [-Wunused-variable]
    float x,y,i,a=0.0;
                ^
2 warnings generated.

:P