Eroare de compilare: user.cpp: In function ‘void afisare(int)’: user.cpp:61:30: error: invalid conversion from ‘int’ to ‘const char*’ [-fpermissive] for(int a=1;a<=5-strlen(s);a++) cout<<'0'; ^ In file included from user.cpp:3:0: /usr/include/string.h:399:15: error: initializing argument 1 of ‘size_t strlen(const char*)’ [-fpermissive] extern size_t strlen (__const char *__s) ^ user.cpp:61:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int a=1;a<=5-strlen(s);a++) cout<<'0'; ^ user.cpp: In function ‘int main()’: user.cpp:69:15: warning: unused variable ‘m’ [-Wunused-variable] int n=20, m, i, x, y,j,k=0; ^ user.cpp:69:21: warning: unused variable ‘x’ [-Wunused-variable] int n=20, m, i, x, y,j,k=0; ^ user.cpp:69:24: warning: unused variable ‘y’ [-Wunused-variable] int n=20, m, i, x, y,j,k=0; ^