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View Compilation Error

0_0_22943432_13876.c: In function 'main':
0_0_22943432_13876.c:14:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=1;i<=n;i++)
         ^
0_0_22943432_13876.c:14:9: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_22943432_13876.c:15:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for(int j=1;j<=n;j++)
             ^
0_0_22943432_13876.c:21:17: error: redefinition of 'i'
         for(int i=1;i<=n;i++)
                 ^
0_0_22943432_13876.c:14:17: note: previous definition of 'i' was here
         for(int i=1;i<=n;i++)
                 ^
0_0_22943432_13876.c:21:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for(int i=1;i<=n;i++)
         ^
0_0_22943432_13876.c:22:21: error: redefinition of 'j'
             for(int j=1;j<=m;j++)
                     ^
0_0_22943432_13876.c:15:21: note: previous definition of 'j' was here
             for(int j=1;j<=n;j++)
                     ^
0_0_22943432_13876.c:22:13: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
             for(int j=1;j<=m;j++)
             ^


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