View Compilation Error

0_0_35412848_1027.c: In function 'main':
0_0_35412848_1027.c:18:6: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
      for(int i=1;i<n+1;i++)
      ^
0_0_35412848_1027.c:18:6: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code