运行 ID: 7654

Main.cc: In function ‘int main()’:
Main.cc:9:5: error: expected ‘,’ or ‘;’ before ‘for’
     for (int i=1; i<=n; i++) {
     ^~~
Main.cc:9:19: error: ‘i’ was not declared in this scope
     for (int i=1; i<=n; i++) {
                   ^
Main.cc:7:9: warning: unused variable ‘k’ [-Wunused-variable]
     int k=1;
         ^
Main.cc:8:9: warning: unused variable ‘product’ [-Wunused-variable]
     int product=1
         ^~~~~~~