View Compilation Error

0_0_31347654_25158.c: In function 'main':
0_0_31347654_25158.c:4:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for(int i=0;i<30;i++){
  ^
0_0_31347654_25158.c:4:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_31347654_25158.c:6:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for(int j=1;j<i;j++) ans[i][j] = ans[i-1][j] + ans[i-1][j-1];
   ^
0_0_31347654_25158.c:9:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for(int i=0;i<t;i++){
   ^
0_0_31347654_25158.c:10:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
    for(int j=0;j<=i;j++){
    ^