Compilare: user.cpp: In function ‘int expresie()’: user.cpp:39:26: warning: right operand of comma operator has no effect [-Wunused-value] else r=termen(),t; ^ user.cpp:41:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i<strlen(s)&&s[i]!=')') { ^ user.cpp: In function ‘void change(int)’: user.cpp:95:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i+1<strlen(s)&&s[i+1]>='A'&&s[i+1]<='Z') return ; ^ user.cpp: In function ‘int main()’: user.cpp:109:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<strlen(t);i++) { ^ user.cpp:120:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<strlen(s);i++) ^ user.cpp:107:9: warning: unused variable ‘j’ [-Wunused-variable] int j; ^ user.cpp: In function ‘int termen()’: user.cpp:88:1: warning: control reaches end of non-void function [-Wreturn-type] } ^