Write a C Program to Print Half Diamond Star Pattern using for loop. This example uses nested for loops to print the Half Diamond Pattern.
#include<stdio.h>
int main()
{
int i, j, rows;
printf("Enter Half Diamond Rows = ");
scanf("%d", &rows);
printf("Half Diamond Star Pattern\n");
for(i = 1; i <= rows; i++)
{
for(j = 1; j <= i; j++)
{
printf("*");
}
printf("\n");
}
for(i = rows - 1; i > 0; i--)
{
for(j = 1; j <= i; j++)
{
printf("*");
}
printf("\n");
}
return 0;
}

This C Program allows entering a symbol and print Half Diamond Pattern with that symbol.
#include<stdio.h>
int main()
{
int i, j, rows;
char ch;
printf("Enter Symbol for Half Diamond = ");
scanf("%c", & ch);
printf("Enter Half Diamond Rows = ");
scanf("%d", &rows);
printf("Half Diamond Star Pattern\n");
i = 1;
while(i <= rows)
{
j = 1;
while(j <= i)
{
printf("%c", ch);
j++;
}
printf("\n");
i++;
}
i = rows - 1;
while(i > 0)
{
j = 1;
while(j <= i)
{
printf("%c", ch);
j++;
}
printf("\n");
i--;
}
return 0;
}
Enter Symbol for Half Diamond = #
Enter Half Diamond Rows = 7
Half Diamond Star Pattern
#
##
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####
#####
######
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######
#####
####
###
##
#