Compilare: main.cpp: In function 'int main()': main.cpp:33:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 33 | for(i=0;i<strlen(c);i++) | ~^~~~~~~~~~ main.cpp:61:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 61 | for(i=0;i<strlen(c);i++) | ~^~~~~~~~~~ main.cpp:94:18: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 94 | for(i=0;i<strlen(c);i++) | ~^~~~~~~~~~