View Compilation Error

0_0_23094293_9347.c: In function 'dfs':
0_0_23094293_9347.c:16:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(int i=0;i<n;i++)
     ^
0_0_23094293_9347.c:16:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_23094293_9347.c: In function 'main':
0_0_23094293_9347.c:30:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=0;i<n;i++)
         ^
0_0_23094293_9347.c:32:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for(int j=0;j<n;j++)
             ^