View Compilation Error

0_0_27308463_23455.c: In function 'main':
0_0_27308463_23455.c:9:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for (int i = 0; i < t; i++)
     ^
0_0_27308463_23455.c:9:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_27308463_23455.c:13:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for (int j = 0; j < n; j++)
         ^
0_0_27308463_23455.c:18:18: error: redefinition of 'j'
         for (int j = 0; j < n; j++)
                  ^
0_0_27308463_23455.c:13:18: note: previous definition of 'j' was here
         for (int j = 0; j < n; j++)
                  ^
0_0_27308463_23455.c:18:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for (int j = 0; j < n; j++)
         ^
0_0_27308463_23455.c:21:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for (int k = j; k < n; k++)
             ^