Compilare: main.cpp: In function 'int main()': main.cpp:13:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<strlen(s1);i++) ~^~~~~~~~~~~ main.cpp:23:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(s2);i++) ~^~~~~~~~~~~ main.cpp:27:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if(s1[j]==s2[i]) ^~ main.cpp:29:10: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' if(j==strlen(s1)) ^~ main.cpp:29:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==strlen(s1)) ~^~~~~~~~~~~~