View Compilation Error

0_0_36039455_9979.cpp: In function 'int main()':
0_0_36039455_9979.cpp:7:2: error: expected ';' before 'for'
  for(int i=0;i*50<=n;i++)//5
  ^
0_0_36039455_9979.cpp:7:14: error: 'i' was not declared in this scope
  for(int i=0;i*50<=n;i++)//5
              ^
0_0_36039455_9979.cpp:8:14: error: 'j' was not declared in this scope
  for(int j=0;j*25<=n;j++)//10
              ^
0_0_36039455_9979.cpp:9:14: error: 'k' was not declared in this scope
  for(int k=0;k*10<=n;k++)//25
              ^
0_0_36039455_9979.cpp:10:14: error: 'l' was not declared in this scope
  for(int l=0;l*5<=n;l++)//50
              ^