View Compilation Error

0_0_34121430_26853.c: In function 'main':
0_0_34121430_26853.c:67:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
    for (int i=1;i<y;i++)
    ^
0_0_34121430_26853.c:67:4: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_34121430_26853.c:93:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
    for (int j=0;j<m;j++)
    ^
0_0_34121430_26853.c:103:4: error: expected expression before '/' token
    //printf("%d\n",sum);
    ^