Compilare: main.cpp: In function 'void parc(int, int)': main.cpp:10:3: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(x+1<=n&&y+1<=m) ^ main.cpp: In function 'int main()': main.cpp:18:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=1;i<=n;i++) ~^~~ main.cpp:19:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=1;j<=m;j++)f>>a[i][j]; ~^~~ main.cpp:18:1: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<=n;i++) ^~~ main.cpp:21:5: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' parc(1,1); ^~~~ main.cpp:16:25: warning: unused variable 'c' [-Wunused-variable] {unsigned long long i,j,c; ^