Wrong Answer
/in/foo.cc: In function 'int main()':
/in/foo.cc:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 1; i <= strlen(c); i++) {
~~^~~~~~~~~~~~
/in/foo.cc: In function 'int main()':
/in/foo.cc:37:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i = 1; i <= strlen(c); i++) {
~~^~~~~~~~~~~~
