View Compilation Error

0_0_36612852_1825.c: In function 'main':
0_0_36612852_1825.c:8:6: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
      for(int a=1;a<=65;a++)
      ^
0_0_36612852_1825.c:8:6: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code