hollow square

#include int main() { int i, j; for(i = 1; i <= 5; i++) { for(j = 1; j <= 5; j++) { if(i == 1 || i == 5 || j == 1 || j == 5) printf("*"); else printf(" "); } printf("\n"); } }

Code output

***** * * * * * * *****