#include<stdio.h> int main() { int i, j, N, columns; /* Input number of columns from user */ printf("Enter number of columns:"); scanf("%d",&N); columns=1; for(i=1;i<N*2;i++) { for(j=1; j<=columns; j++) { printf("*"); } if(i < N) { /* Increment number of columns per row for upper part */ columns++; } else { /* Decrement number of columns per row for lower part */ columns--; } /* Move to next line */ printf("\n"); } return 0; }
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