/in/p1.cpp: In function 'int main()':
/in/p1.cpp:74:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int space=1; space<=str_test.length()/2;space++){
~~~~~^~~~~~~~~~~~~~~~~~~~~
/in/p1.cpp:75:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int num=0;num+space<=str_test.length()-1;num++){
~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
/in/p1.cpp:79:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if ((num+space==str_test.length()-1)&&(str_test[space-1]==str_test[num+space])){
~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~