0_0_22732879_17826.c: In function 'main':
0_0_22732879_17826.c:10:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=1;i<=n;i++)
^
0_0_22732879_17826.c:10:9: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_22732879_17826.c:12:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int j=1;j<=k;j++)
^
0_0_22732879_17826.c:20:17: error: redefinition of 'i'
for(int i=n-1;i>=1;i--)
^
0_0_22732879_17826.c:10:17: note: previous definition of 'i' was here
for(int i=1;i<=n;i++)
^
0_0_22732879_17826.c:20:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=n-1;i>=1;i--)
^
0_0_22732879_17826.c:22:15: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int j=1;j<=k;j++)
^
0_0_22732879_17826.c:27:17: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int o=1;o<=k;o++)
^
0_0_22732879_17826.c:40:17: error: redefinition of 'i'
for(int i=1;i<=k;i++)
^
0_0_22732879_17826.c:20:17: note: previous definition of 'i' was here
for(int i=n-1;i>=1;i--)
^
0_0_22732879_17826.c:40:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=1;i<=k;i++)
^
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