Compilare: user.cpp: In function ‘int main()’: user.cpp:26:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&n); ^ user.cpp: In function ‘void Add(int, int, int)’: user.cpp:14:21: warning: iteration 401u invokes undefined behavior [-Waggressive-loop-optimizations] if(num2[x][i]>9) ^ user.cpp:12:5: note: containing loop for(int i = 0;i<500;i++) ^ user.cpp:10:31: warning: iteration 401u invokes undefined behavior [-Waggressive-loop-optimizations] num2[x][i] = num1[y][i]+num1[z][i]; ^ user.cpp:8:5: note: containing loop for(int i = 0 ;i < 500;i++) ^ user.cpp: In function ‘int main()’: user.cpp:62:32: warning: iteration 401u invokes undefined behavior [-Waggressive-loop-optimizations] sum[i] += num2[j][i]; ^ user.cpp:60:5: note: containing loop for(int i = 0 ;i<500;i++) ^ user.cpp:52:39: warning: iteration 401u invokes undefined behavior [-Waggressive-loop-optimizations] num1[k][j] = num2[k][j]; ^ user.cpp:48:9: note: containing loop for(int j = 0 ;j < 500;j++) ^ user.cpp:40:35: warning: iteration 401u invokes undefined behavior [-Waggressive-loop-optimizations] num2[0][j] = num1[1][j]; ^ user.cpp:38:9: note: containing loop for(int j = 0 ;j < 500;j++) ^