0_0_22586940_8072.c: In function 'main':
0_0_22586940_8072.c:9:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=1;i<=n;i++){
^
0_0_22586940_8072.c:9:9: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_22586940_8072.c:12:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int j=0;j<m;j++){
^
0_0_22586940_8072.c:19:17: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=a;i<=b;i++){
^
0_0_22586940_8072.c:26:21: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=a;i<=b;i++){
^
0_0_22586940_8072.c:29:29: error: redefinition of 'i'
for(int i=1;i<=30;i++){
^
0_0_22586940_8072.c:26:29: note: previous definition of 'i' was here
for(int i=a;i<=b;i++){
^
0_0_22586940_8072.c:29:21: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=1;i<=30;i++){
^
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