/in/foo.c: In function 'insert':
/in/foo.c:9:3: warning: statement with no effect [-Wunused-value]
   for(b;b>i;b--)
   ^~~
/in/foo.c:9:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
/in/foo.c:11:4: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for'
    break;
    ^~~~~