Compilare: user.cpp: In function ‘void separare1()’: user.cpp:27:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(ecuatie);i++) ^ user.cpp: In function ‘void separare2()’: user.cpp:33:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<strlen(ecuatie);i++) ^ user.cpp: In function ‘void exctracting1()’: user.cpp:43:16: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] aux1[i]=NULL; ^ user.cpp: In function ‘void exctracting2()’: user.cpp:54:16: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] aux2[i]=NULL; ^ user.cpp: In function ‘void conversie()’: user.cpp:64:17: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(extract1[i][0]=='+') ^ user.cpp:71:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(extract1[i][0]=='-') ^ user.cpp:78:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(extract1[i][0]!='-' && extract1[i][0]!='+' ) ^ user.cpp: In function ‘void conversie1()’: user.cpp:111:17: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(extract2[i][0]=='+') ^ user.cpp:118:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(extract2[i][0]=='-') ^ user.cpp:125:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(extract2[i][0]!='-' && extract2[i][0]!='+' ) ^