View Compilation Error

0_0_37106214_29977.c: In function 'Fun':
0_0_37106214_29977.c:6:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(int i=0;i<n;i++){
     ^
0_0_37106214_29977.c:6:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_37106214_29977.c: In function 'main':
0_0_37106214_29977.c:22:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(long long j=0;j<num;j++){
     ^