View Compilation Error

0_0_31677080_27202.c: In function 'main':
0_0_31677080_27202.c:5:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
     for(int i=1; i<=n; i++){
     ^
0_0_31677080_27202.c:5:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code