Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:32:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<strlen(cuv2);j++){ ^ user.cpp:41:18: warning: converting to non-pointer type ‘char’ from NULL [-Wconversion-null] text2[k2]=NULL; ^ user.cpp:43:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<strlen(text2);i++) ^ user.cpp:56:21: error: cannot convert ‘char (*)[20]’ to ‘char (*)[21]’ for argument ‘1’ to ‘int poz(char (*)[21], int*, int)’ {P=poz(a,v,i); ^