Compilare: main.cpp: In function 'int main()': main.cpp:2:132: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] int t,n,m,i,j,s[201][201],r[201][201];int main(){freopen("stirling.in","r",stdin),freopen("stirling.out","w",stdout),scanf("%d",&t);for(i=1;i<201;i++)for(j=1;j<201;j++)if(i>j)s[i][j]=(s[i-1][j-1]-(i-1)*s[i-1][j])%98999,r[i][j]=(r[i-1][j-1]+j*r[i-1][j])%98999;else if(i==j)s[i][j]=r[i][j]=1;while(t--){scanf("%d%d%d",&i,&n,&m),printf("%d\n",i==1?s[n][m]:r[n][m]);}} ^ main.cpp:2:132: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:2:132: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] main.cpp:2:362: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] int t,n,m,i,j,s[201][201],r[201][201];int main(){freopen("stirling.in","r",stdin),freopen("stirling.out","w",stdout),scanf("%d",&t);for(i=1;i<201;i++)for(j=1;j<201;j++)if(i>j)s[i][j]=(s[i-1][j-1]-(i-1)*s[i-1][j])%98999,r[i][j]=(r[i-1][j-1]+j*r[i-1][j])%98999;else if(i==j)s[i][j]=r[i][j]=1;while(t--){scanf("%d%d%d",&i,&n,&m),printf("%d\n",i==1?s[n][m]:r[n][m]);}} ^