Compilare: main.cpp: In function 'int main()': main.cpp:40:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1; i<=r; i++) ^~~ main.cpp:50:9: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' printf("%d ",a[1][1]); ^~~~~~ main.cpp:37:33: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bemo.in","r",stdin); ^ main.cpp:38:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("bemo.out","w",stdout); ^ main.cpp:39:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&r,&c); ^ main.cpp:43:33: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]); ^ main.cpp: In function 'void dei(int, int, int, int)': main.cpp:14:10: warning: 'yy' may be used uninitialized in this function [-Wmaybe-uninitialized] else if(yi==yf) ^~ main.cpp:9:5: warning: 'xx' may be used uninitialized in this function [-Wmaybe-uninitialized] if(xi==xf) ^~