To understand this example, you should have the knowledge of the following C programming topics:
* * * * * * * * * * * * * * *
Source Code
#include<stdio.h>
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("\n");
}
return 0;
}
1 1 2 1 2 3 1 2 3 4 1 2 3 4 5
Source Code
#include<stdio.h>
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("\n");
}
return 0;
}
A B B C C C D D D D E E E E E
Source Code
#include<stdio.h>
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("\n");
}
return 0;
}
* * * * * * * * * * * * * * *
Source Code
#include<stdio.h>
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("\n");
}
return 0;
}
1 2 3 4 5 1 2 3 4 1 2 3 1 2 1
Source Code
#include<stdio.h>
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("\n");
}
return 0;
}
* * * * * * * * * * * * * * * * * * * * * * * * *
Source Code
#include<stdio.h>
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("\n");
}
return 0;
}
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<stdio.h>
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("\n");
}
return 0;
}
* * * * * * * * * * * * * * * * * * * * * * * * *
Source Code
#include<stdio.h>
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("\n");
}
return 0;
}
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("\n");
}
return 0;
}
1 2 3 4 5 6 7 8 9 10
Source Code
#include<stdio.h>
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("\n");
}
return 0;
}