0_0_16774471_26199.c: In function 'main':
0_0_16774471_26199.c:16:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int j=0;j<len;j++)
^
0_0_16774471_26199.c:16:3: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_16774471_26199.c:29:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i2=1;i2<=18;i2++)
^
|