/in/foo.c: In function 'main':
/in/foo.c:23:17: error: 'r' undeclared (first use in this function)
/in/foo.c:23:17: note: each undeclared identifier is reported only once for each function it appears in
/in/foo.c:23:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
/in/foo.c:26:3: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
/in/foo.c:5:12: warning: unused variable 'k' [-Wunused-variable]
/in/foo.c: In function 'pdss':
/in/foo.c:32:5: error: 'i' undeclared (first use in this function)