View Compilation Error

0_0_34421482_11847.c:4:1: error: unknown type name 'bool'
 bool isp[50],vis[50];
 ^
0_0_34421482_11847.c: In function 'getp':
0_0_34421482_11847.c:7:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for(int i=2;i<=50;i++){
  ^
0_0_34421482_11847.c:7:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_34421482_11847.c:9:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
   for(int j=1;j<=cnt&&i*p[j]<=50;j++){
   ^
0_0_34421482_11847.c: In function 'dfs':
0_0_34421482_11847.c:16:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
  for(int i=2;i<=n;i++){
  ^
0_0_34421482_11847.c:22:6: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
      for(int j=1;j<=n;j++) printf("%d ",a[j]);
      ^