Compilare: user.cpp: In function ‘int sparge(int)’: user.cpp:13:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=x;j<=strlen(s);j++)if(s[j]=='<')return 1; ^ user.cpp: In function ‘int calculeaza(char*)’: user.cpp:19:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for( j=0;j<strlen(s);j++) ^ user.cpp: In function ‘int verifica(int)’: user.cpp:27:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(j==strlen(s)-1)return k; ^ user.cpp:30:1: warning: control reaches end of non-void function [-Wreturn-type] } ^