View Compilation Error

0_0_37346674_27104.c: In function 'main':
0_0_37346674_27104.c:34:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
    for(int n=x;n<=y;n++)
    ^
0_0_37346674_27104.c:34:4: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_37346674_27104.c:36:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(int i=2;i<n/2;i++)
     ^