bt Desktop # gcc -o test test.c
test.c: In function `main':
test.c:8: warning: assignment makes pointer from integer without a cast
test.c:12: error: `i' undeclared (first use in this function)
test.c:12: error: (Each undeclared identifier is reported only once
test.c:12: error: for each function it appears in.)
test.c:14: error: `c' undeclared (first use in this function)
test.c:15: warning: passing arg 1 of `fputc' makes integer from pointer without a cast