Compilare: user.cpp: In function ‘int main()’: user.cpp:21:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<strlen(b);j++){ ^ user.cpp:24:85: warning: array subscript is above array bounds [-Warray-bounds] if(b[j]=='J') {a[i][j]=-1;c[3]=i;c[4]=j+1;} ^ user.cpp:31:30: warning: array subscript is above array bounds [-Warray-bounds] while(xx!=c[3] || yy!=c[4]){ ^