View Compilation Error

0_0_19850992_10196.c: In function 'main':
0_0_19850992_10196.c:9:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
    for(int i = 0; i < n; i++)
    ^
0_0_19850992_10196.c:9:4: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_19850992_10196.c:15:12: error: redefinition of 'i'
    for(int i = 0; i < n; i++)
            ^
0_0_19850992_10196.c:9:12: note: previous definition of 'i' was here
    for(int i = 0; i < n; i++)
            ^
0_0_19850992_10196.c:15:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
    for(int i = 0; i < n; i++)
    ^