0_0_33488869_22681.c: In function 'dfs':
0_0_33488869_22681.c:14:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i = 0; i < n; i++) {
^
0_0_33488869_22681.c:14:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_33488869_22681.c:15:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int j = i + 1; j < n; j++) {
^
0_0_33488869_22681.c: In function 'main':
0_0_33488869_22681.c:46:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i = 0; i < 4; i++) {
^
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