Compilare: main.cpp: In function 'void invers()': main.cpp:22:6: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(j=1; j<=n; j++) ^~~ main.cpp:23:27: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' temp=access[i][j]; access[i][j]=access[n-i+1][j]; access[n-i+1][j]=temp; ^~~~~~ main.cpp:23:55: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] temp=access[i][j]; access[i][j]=access[n-i+1][j]; access[n-i+1][j]=temp; ~~~~~~~~~~~~~~~^ main.cpp:23:75: warning: 'temp' may be used uninitialized in this function [-Wmaybe-uninitialized] temp=access[i][j]; access[i][j]=access[n-i+1][j]; access[n-i+1][j]=temp; ^~~~ main.cpp: In function 'int main()': main.cpp:23:75: warning: 'temp' may be used uninitialized in this function [-Wmaybe-uninitialized] temp=access[i][j]; access[i][j]=access[n-i+1][j]; access[n-i+1][j]=temp; ^~~~ main.cpp:20:7: note: 'temp' was declared here int temp, i, j; ^~~~ main.cpp:23:55: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] temp=access[i][j]; access[i][j]=access[n-i+1][j]; access[n-i+1][j]=temp; ~~~~~~~~~~~~~~~^ main.cpp:20:16: note: 'j' was declared here int temp, i, j; ^ main.cpp:23:75: warning: 'temp' may be used uninitialized in this function [-Wmaybe-uninitialized] temp=access[i][j]; access[i][j]=access[n-i+1][j]; access[n-i+1][j]=temp; ^~~~ main.cpp:20:7: note: 'temp' was declared here int temp, i, j; ^~~~ main.cpp:23:55: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] temp=access[i][j]; access[i][j]=access[n-i+1][j]; access[n-i+1][j]=temp; ~~~~~~~~~~~~~~~^ main.cpp:20:16: note: 'j' was declared here int temp, i, j; ^