C program to print diamond pattern
*
***
*****
***
*
#include <stdio.h>
int main()
{
int n, c, k, space = 1;
printf("Enter number of rows\n");
scanf("%d", &n);
space = n - 1;
for (k = 1; k <= n; k++)
{
for (c = 1; c <= space; c++)
printf(" ");
space--;
for (c = 1; c <= 2*k-1; c++)
printf("*");
printf("\n");
}
space = 1;
for (k = 1; k <= n - 1; k++)
{
for (c = 1; c <= space; c++)
printf(" ");
space++;
for (c = 1 ; c <= 2*(n-k)-1; c++)
printf("*");
printf("\n");
}
return 0;
}
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C program to print diamond using recursion
#include <stdio.h>
void print (int);
int main () {
int rows;
scanf("%d", &rows);
print(rows);
return 0;
}
void print (int r) {
int c, space;
static int stars = -1;
if (r <= 0)
return;
space = r - 1;
stars += 2;
for (c = 0; c < space; c++)
printf(" ");
for (c = 0; c < stars; c++)
printf("*");
printf("\n");
print(--r);
space = r + 1;
stars -= 2;
for (c = 0; c < space; c++)
printf(" ");
for (c = 0; c < stars; c++)
printf("*");
printf("\n");
}
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