Compilare: main.cpp: In function 'int main()': main.cpp:11:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf (fin,"%d%d%d%d",&aa,&b,&c,&d); ^ main.cpp:124:23: warning: 'jjj' may be used uninitialized in this function [-Wmaybe-uninitialized] jjj ++; ^ main.cpp:116:29: warning: 'iii' may be used uninitialized in this function [-Wmaybe-uninitialized] a[iii][jjj] = a[iii][jjj + 1] = nr; ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:100:22: warning: 'jj' may be used uninitialized in this function [-Wmaybe-uninitialized] jj ++; ^ main.cpp:92:27: warning: 'ii' may be used uninitialized in this function [-Wmaybe-uninitialized] a[ii][jj] = a[ii][jj + 1] = nr; ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ main.cpp:67:25: warning: 'j' may be used uninitialized in this function [-Wmaybe-uninitialized] a[i][j] = a[i - 1][j] = nr; ~~~~~~~~^~~~~~~~~~~~~~~~~~ main.cpp:75:21: warning: 'i' may be used uninitialized in this function [-Wmaybe-uninitialized] i --; ^ main.cpp:55:21: warning: 'd3' may be used uninitialized in this function [-Wmaybe-uninitialized] while (d1 || d2 || d3){ ~~~~~~~~~^~~~~ main.cpp:55:21: warning: 'd2' may be used uninitialized in this function [-Wmaybe-uninitialized] main.cpp:55:21: warning: 'd1' may be used uninitialized in this function [-Wmaybe-uninitialized]