0_0_23727778_17841.c: In function 'kruskal':
0_0_23727778_17841.c:58:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 0; i < m; i++) {
^
0_0_23727778_17841.c:58:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_23727778_17841.c: In function 'main':
0_0_23727778_17841.c:75:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 1; i <= n; ++i) {
^
0_0_23727778_17841.c:78:12: error: redefinition of 'i'
for (int i = 0; i < m; ++i) {
^
0_0_23727778_17841.c:75:12: note: previous definition of 'i' was here
for (int i = 1; i <= n; ++i) {
^
0_0_23727778_17841.c:78:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 0; i < m; ++i) {
^
0_0_23727778_17841.c:81:12: error: redefinition of 'i'
for (int i = 0; i < k; ++i) {
^
0_0_23727778_17841.c:78:12: note: previous definition of 'i' was here
for (int i = 0; i < m; ++i) {
^
0_0_23727778_17841.c:81:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 0; i < k; ++i) {
^
0_0_23727778_17841.c:83:4: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int j = 1; j < a; ++j) {
^
0_0_23727778_17841.c:94:12: error: redefinition of 'i'
for (int i = 1; i <= n; ++i) {
^
0_0_23727778_17841.c:81:12: note: previous definition of 'i' was here
for (int i = 0; i < k; ++i) {
^
0_0_23727778_17841.c:94:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 1; i <= n; ++i) {
^
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