View Compilation Error

0_0_33988865_25027.c: In function 'main':
0_0_33988865_25027.c:8:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for (int t = 1; t <= T; t++)
     ^
0_0_33988865_25027.c:8:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_33988865_25027.c:13:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for (int i = 0; i < K; i++)
         ^
0_0_33988865_25027.c:15:18: error: redefinition of 'i'
         for (int i = 0; i < K; i++)
                  ^
0_0_33988865_25027.c:13:18: note: previous definition of 'i' was here
         for (int i = 0; i < K; i++)
                  ^
0_0_33988865_25027.c:15:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for (int i = 0; i < K; i++)
         ^