1_734_1451_30502.c: In function 'main':
1_734_1451_30502.c:8:5: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int cas=1; cas<=T; cas++)
^
1_734_1451_30502.c:8:5: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
1_734_1451_30502.c:13:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=1; i<=n; i++)
^
1_734_1451_30502.c:15:17: error: redefinition of 'i'
for(int i=2; i<=n; i++)
^
1_734_1451_30502.c:13:17: note: previous definition of 'i' was here
for(int i=1; i<=n; i++)
^
1_734_1451_30502.c:15:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=2; i<=n; i++)
^
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