Compilare: user.cpp: In function ‘void citire()’: user.cpp:20:25: warning: unused variable ‘j’ [-Wunused-variable] for (int i = 1, j; i <= n; i++) ^ user.cpp: In function ‘void afisare1()’: user.cpp:78:13: warning: unused variable ‘b’ [-Wunused-variable] int a=1,b=1; ^ user.cpp: In function ‘void citire()’: user.cpp:19:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:22:48: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &mat[i][j]); ^ user.cpp: In function ‘void afisare1()’: user.cpp:62:16: warning: ‘Y’ may be used uninitialized in this function [-Wmaybe-uninitialized] int X, Y; ^ user.cpp:62:13: warning: ‘X’ may be used uninitialized in this function [-Wmaybe-uninitialized] int X, Y; ^