Print Patterns in C : part 1

c program to print patterns of numbers and stars

Patterns Part 1
Patterns Part 2
Patterns Part 3
Patterns Part 4
Patterns Part 5

---

Output : 1

 * * * * *
 * * * * *
 * * * * *
 * * * * *
 * * * * *_

Program : 1

#include <stdio.h>
#include <conio.h>
void main() {
	int i,j;
	clrscr();
	for (i=0; i<5; i++) {
		for (j=0; j<5; j++) {
			printf(" * ");
		}
		printf("\n");
	}
	getch();
}

---

Output : 2

 * 
 * * 
 * * * 
 * * * *
 * * * * *_

Program : 2

#include <stdio.h>
#include <conio.h>
void main() {
	int i,j;
	clrscr();
	for (i=0; i<5; i++) {
		for (j=0; j<=i; j++) {
			printf(" * ");
		}
		printf("\n");
	}
	getch();
}

---

Output : 3

         *
       * *
     * * *
   * * * *
 * * * * *_

Program : 3

#include <stdio.h>
#include <conio.h>
void main() {
	int i,j,k;
	clrscr();
	for (i=1; i<=5; i++) {
		for (j=5; j>=i; j--) {
			printf(" ");
		}
		for (k=1; k<=i; k++) {
			printf("*");
		}
		printf("\n");
	}
	getch();
}

---

Output : 4

 * * * * *
   * * * *
     * * *
       * *
         *_

Program : 4

#include <stdio.h>
#include <conio.h>
void main() {
	int i,j,k,samp=1;
	clrscr();
	for (i=5; i>=1; i--) {
		for (k=samp; k>=0; k--) {
			printf(" ");
			// only 1 space
		}
		for (j=i; j>=1; j--) {
			printf("*");
		}
		samp = samp + 1;
		printf("\n");
	}
	getch();
}

---

Output : 5

 * * * * *
 * * * *
 * * *
 * *
 *_

Program : 5

#include <stdio.h>
#include <conio.h>
void main() {
	int i,j;
	clrscr();
	for (i=5; i>=1; i--) {
		for (j=1; j<=i; j++) {
			printf(" * ");
		}
		printf("\n");
	}
	getch();
}

---

Output : 6

     *
    * *
   * * *
  * * * *
 * * * * *_

Program : 6

#include <stdio.h>
#include <conio.h>
void main() {
	int i,j,k,t=0;
	clrscr();
	for (i=1; i<=5; i++) {
		for (k=t; k<5; k++) {
			printf(" ");
		}
		for (j=0; j< i; j++) {
			printf(" * ");
			t = t + 1;
		}
		printf("\n");
	}
	getch();
}

---

Output : 7

         *
       * *
     * * *
   * * * *
 * * * * *
   * * * *
     * * *
       * *
         *_

Program : 7

#include <stdio.h>
#include <conio.h>
void main() {
	int i,j,k,samp=1;
	clrscr();
	for (i=1; i<=5; i++) {
		for (k=samp; k<=5; k++) {
			printf(" ");
		}
		for (j=0; j< i; j++) {
			printf("*");
		}
		samp = samp + 1;
		printf("\n");
	}
	samp = 1;
	for (i=4; i>=1; i--) {
		for (k=samp; k>=0; k--) {
			printf(" ");
		}
		for (j=i; j>=1; j--) {
			printf("*");
		}
		samp = samp + 1;
		printf("\n");
	}
	getch();
}

---

Output : 8

Enter number of rows: 5

1
2 3
4 5 6
7 8 9 10
11 12 13 14 15_

Program : 8

#include <stdio.h>
#include <conio.h>
void main() {
	int rw, c, no=1 ,len;
	clrscr();
	printf("Enter number of rows: ");
	scanf("%d," &len);
	for (rw=1; rw<=len; rw++) {
		printf("\n");
		for (c=1; c<=rw; c++) {
			printf(" %2d ", no);
			no++;
		}
	}
	getch();
}

---

Output : 9

Enter number of rows: 5

          0          
        1 0 1        
      2 1 0 1 2      
    3 2 1 0 1 2 3    
  4 3 2 1 0 1 2 3 4  
5 4 3 2 1 0 1 2 3 4 5_

Program : 9

#include <stdio.h>
#include <conio.h>
void main() {
	int no,i,y,x=35;
	clrscr();
	printf("Enter number of rows: ");
	scanf("%d," &no);
	for (y=0;y<=no;y++) {
		goto(x,y+1);
		for (i=0-y; i<=y; i++) {
			printf(" %3d ", abs(i));
			x=x-3;
		}
	}
	getch();
}

---

Output : 10

    1    
   2 2   
  3 3 3  
 4 4 4 4 
5 5 5 5 5_

Program : 10

#include <stdio.h>
#include <conio.h>
void main() {
	int i, j=5, k, x;
	clrscr();
	for (i=1;i<=5;i++) {
		for (k=1;k<=j;k++) {
			printf(" ");
		}
		for (x=1;x<=i;x++) {
			printf("%d",i);
			printf(" ");
		}
		printf("\n");
		j=j-1;
	}
	getch();
}