Compilare: main.cpp: In function 'int main()': main.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(i=0;i<strlen(c)-1;i++) | ~^~~~~~~~~~~~ main.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(i=2;i<strlen(c);i++) | ~^~~~~~~~~~