Compilare: main.cpp: In function 'int main()': main.cpp:68:33: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] for (k=1;k<i;k++) if (sl==d[k][j]^d[i-k][j]) nr++;//printf("%d\n",sl^d[k][j]^d[i-k][j]); ~~^~~~~~~~~ main.cpp:70:33: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] for (k=1;k<j;k++) if (sl==d[i][k]^d[i][j-k]) nr++;//printf("%d\n",sl^d[i][k]^d[i][j-k]); ~~^~~~~~~~~ main.cpp:72:33: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] for (k=2;k<i;k++) if (sl==d[k-1][j]^d[i-k][j]) nr++;//printf("%d\n",sl^d[k-1][j]^d[i-k][j]); ~~^~~~~~~~~~~ main.cpp:74:33: warning: suggest parentheses around comparison in operand of '^' [-Wparentheses] for (k=2;k<j;k++) if (sl==d[i][k-1]^d[i][j-k]) nr++;//printf("%d\n",sl^d[i][k-1]^d[i][j-k]); ~~^~~~~~~~~~~ main.cpp:22:13: warning: unused variable 'n' [-Wunused-variable] int i,j,n,m=0,k; ^ main.cpp:18:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("joc2.in","r",stdin); ^ main.cpp:20:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("joc2.out","w",stdout); ^ main.cpp:50:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^ main.cpp:54:34: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x[i],&y[i]); ^