0_0_37360869_7037.c: In function 'main':
0_0_37360869_7037.c:9:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int j=0;j<n;j++)
^
0_0_37360869_7037.c:9:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
0_0_37360869_7037.c:13:3: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for(int i=0;i<strlen(c);i++)
^
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