View Compilation Error

0_0_36992975_25628.c: In function 'main':
0_0_36992975_25628.c:8:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for (int i = 0; i < num; i++)
     ^
0_0_36992975_25628.c:8:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_36992975_25628.c:14:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for (int j = 0; j * a <= 360; j++)
             ^
0_0_36992975_25628.c:16:17: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
                 for (int k = 0; k * b <= 360; k++)
                 ^