View Compilation Error

0_0_22048841_8932.c: In function 'solve':
0_0_22048841_8932.c:5:20: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
 #define rek(i,a,b) for (int i=(a);i>=(b);i--)
                    ^
0_0_22048841_8932.c:48:5: note: in expansion of macro 'rek'
     rek(i,N-2,0)
     ^
0_0_22048841_8932.c:5:20: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
 #define rek(i,a,b) for (int i=(a);i>=(b);i--)
                    ^
0_0_22048841_8932.c:48:5: note: in expansion of macro 'rek'
     rek(i,N-2,0)
     ^
0_0_22048841_8932.c:50:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int j = 1; j + i <= N && j <= 200; ++j)
         ^
0_0_22048841_8932.c: In function 'main':
0_0_22048841_8932.c:6:20: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
 #define rep(i,a,b) for (int i=(a);i<=(b);i++)
                    ^
0_0_22048841_8932.c:71:9: note: in expansion of macro 'rep'
         rep(i,0,N-1)
         ^