View Compilation Error

0_0_17542123_19469.c: In function 'main':
0_0_17542123_19469.c:14:9: error: expected expression before '/' token
         //int high = 0;
         ^
0_0_17542123_19469.c:17:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=1;i<=n;i++)
         ^
0_0_17542123_19469.c:17:9: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_17542123_19469.c:19:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for(int j=1;j<=m;j++)
             ^
0_0_17542123_19469.c:25:17: error: redefinition of 'i'
         for(int i=1;i<=n+1;i++)
                 ^
0_0_17542123_19469.c:17:17: note: previous definition of 'i' was here
         for(int i=1;i<=n;i++)
                 ^
0_0_17542123_19469.c:25:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=1;i<=n+1;i++)
         ^
0_0_17542123_19469.c:27:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for(int j=1;j<=m+1;j++)
             ^