Program 1
*
* *
* * *
* * * *
* * * * *
Source Code
#include
int main()
{
int i, j, rows;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=1; i<=rows; ++i)
{
for(j=1; j<=i; ++j)
{
printf("* ");
}
printf(" ");
}
return 0;
}
Program 2
1
1 2
1 2 3
1 2 3 4
1 2 3 4 5
Source Code
#include
int main()
{
int i, j, rows;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=1; i<=rows; ++i)
{
for(j=1; j<=i; ++j)
{
printf("%d ",j);
}
printf(" ");
}
return 0;
}
Program 3
A
B B
C C C
D D D D
E E E E E
Source Code
#include
int main()
{
int i, j;
char input, alphabet = 'A';
printf("Enter the uppercase character you want to print in last row: ");
scanf("%c",&input);
for(i=1; i <= (input-'A'+1); ++i)
{
for(j=1;j<=i;++j)
{
printf("%c", alphabet);
}
++alphabet;
printf(" ");
}
return 0;
}
Program 4
* * * * *
* * * *
* * *
* *
*
Source Code
#include
int main()
{
int i, j, rows;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=rows; i>=1; --i)
{
for(j=1; j<=i; ++j)
{
printf("* ");
}
printf(" ");
}
return 0;
}
Program 5
1 2 3 4 5
1 2 3 4
1 2 3
1 2
1
Source Code
#include
int main()
{
int i, j, rows;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=rows; i>=1; --i)
{
for(j=1; j<=i; ++j)
{
printf("%d ",j);
}
printf(" ");
}
return 0;
}
Program 6
*
* * *
* * * * *
* * * * * * *
* * * * * * * * *
Source Code
#include
int main()
{
int i, space, rows, k=0;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=1; i<=rows; ++i, k=0)
{
for(space=1; space<=rows-i; ++space)
{
printf(" ");
}
while(k != 2*i-1)
{
printf("* ");
++k;
}
printf(" ");
}
return 0;
}
Program 7
1
2 3 2
3 4 5 4 3
4 5 6 7 6 5 4
5 6 7 8 9 8 7 6 5
Source Code
#include
int main()
{
int i, space, rows, k=0, count = 0, count1 = 0;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=1; i<=rows; ++i)
{
for(space=1; space <= rows-i; ++space)
{
printf(" ");
++count;
}
while(k != 2*i-1)
{
if (count <= rows-1)
{
printf("%d ", i+k);
++count;
}
else
{
++count1;
printf("%d ", (i+k-2*count1));
}
++k;
}
count1 = count = k = 0;
printf(" ");
}
return 0;
}
Program 8
* * * * * * * * *
* * * * * * *
* * * * *
* * *
*
Source Code
#include
int main()
{
int rows, i, j, space;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=rows; i>=1; --i)
{
for(space=0; space < rows-i; ++space)
printf(" ");
for(j=i; j <= 2*i-1; ++j)
printf("* ");
for(j=0; j < i-1; ++j)
printf("* ");
printf(" ");
}
return 0;
}
Program 9
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
Source Code
#include <stdio.h>
int main()
{
int rows, coef = 1, space, i, j;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=0; i<rows; i++)
{
for(space=1; space <= rows-i; space++)
printf(" ");
for(j=0; j <= i; j++)
{
if (j==0 || i==0)
coef = 1;
else
coef = coef*(i-j+1)/j;
printf("%4d", coef);
}
printf("
");
}
return 0;
}
Program 10
1
2 3
4 5 6
7 8 9 10
Source Code
#include
int main()
{
int rows, i, j, number= 1;
printf("Enter number of rows: ");
scanf("%d",&rows);
for(i=1; i <= rows; i++)
{
for(j=1; j <= i; ++j)
{
printf("%d ", number);
++number;
}
printf(" ");
}
return 0;
}
