View Compilation Error

0_0_38365470_11823.c: In function 'j':
0_0_38365470_11823.c:22:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for(int i=1;i<=n;i++){
  ^
0_0_38365470_11823.c:22:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_38365470_11823.c: In function 'main':
0_0_38365470_11823.c:30:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for(int i=0;i<c;i++){
  ^