C code to Alphabet triangle pattern using do-while loop

C code to Alphabet triangle pattern using the do-while loop

In this article, we will discuss the concept of C code to Alphabet triangle pattern using the do-while loop in C programming language

We can print various type of number, asterisk, binary patterns using for, while and do-while loop in C language

In this post, we will discuss how to write a program to print different alphabet triangle pattern using the do-while loop in C language.

 

To understand this example programs, you should have previous knowledge of following Java topics

Do while loop in C language

Nested do while loop in C language

C code to Alphabet triangle pattern

Program to Alphabet triangle pattern 1

Program 1

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int rows;
    printf("Alphabet pattern\n");
    printf("Enter the number of rows\n");
    //Takes input from the user to number of rows
    scanf("%d",&rows);
    printf("\n");
    int i,j;
    i=1;
    do{//outer loop
             j=1;
            do{//inner loop
                 printf("%c",'A'-1+i);
                 j++;
    }while(j<=i);
    printf("\n");
    i++;
    }while(i<=rows);
    getch();
    return 0;
    }

 

When the above code is executed, it produces the following results

 

 

Program to Alphabet triangle pattern 2

Program 2

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,rows;
    printf("Enter the number of rows: ");
//Takes input from the user to number of rows
    scanf("%d",&rows);
    printf("\n");
    i=rows;
    do{//outer loop
            j=i;
        do
{//inner loop

    printf("%c",'A'-1+j);
    j--;
}while(j>=1);
i--;
printf("\n");
}while(i>=1);
    getch();
    return 0;
}

When the above code is executed, it produces the following results

 

Program to Alphabet triangle pattern 3

Program 3

#include <stdio.h>
#include <stdlib.h>

int main()
{
     int i,j,rows;
    printf("Alphabet pattern\n\n");
     printf("Enter the number of rows\n");
//Takes input from the user to number of rows
     scanf("%d",&rows);
i=1;
    do{
            j=rows;
        do{
        printf("%c",'A'-1+i);
     j--;
    }while(j>=i);
    printf("\n");
     i++;
    }while(i<=rows);
     getch();
    return 0;
}

When the above code is executed, it produces the following results

 

Program to Alphabet triangle pattern 4

Program 4

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,rows;
    printf("Alphabet pattern \n\n");
    printf("Enter number of rows\n");
//Takes input from the user to number of rows
    scanf("%d",&rows);
    printf("\n");
i=1;
   do{
        j=1;
        do{
        printf("%c",'A'+j-1);
   j++;
    }while(j<=i);
    printf("\n");
     i++;
    }while(i<=rows);
     getch();
    return 0;
}

When the above code is executed, it produces the following results

 

Program to Alphabet triangle pattern 5

Program 5

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,rows;
    printf("Alphabet pattern 1\n\n");
    printf("Enter the number of rows\n\n");
//Takes input from the user to number of rows
    scanf("%d",&rows);
    printf("\n");
    i=rows;
    do{
            j=i;
        do{
        printf("%c",'A'+j-1);
    j++;
    }while( j<=rows);
    printf("\n");
    i--;
    }while( i>=1);
     getch();
    return 0;
}

 

When the above code is executed, it produces the following results

Program to Alphabet triangle pattern 6

Program 6

#include <stdio.h>
#include <stdlib.h>

int main()
{
    printf("Alphabet pattern \n\n");
    printf("Enter the number of rows \n\n");
//Takes input from the user for number of rows
    int i,j,rows;
    scanf("%d",&rows);
    i=rows;
    do{
            j=1;
        do{
        printf("%c",'A'+j-1);
    j++;
    }while( j<=i);
    printf("\n");
    i--;
    }while( i>=1);
     getch();
    return 0;
}

When the above code is executed, it produces the following results

 

Program to Alphabet triangle pattern 7

Program 7

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,rows;
    printf("Enter the number of rows\n");
//Takes input from the user for number of rows
    scanf("%d",&rows);
    printf("your pattern here\n");
    i=1;
    do{
            j=i;
        do{
            printf("%c",(char)(j+64));
            j++;
        }while(j<=rows);
        i++;
        printf("\n");
    }while(i<=rows);
    getch();
    return 0;
}

When the above code is executed, it produces the following results

 

Program to Alphabet triangle pattern 8

Program 8

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,rows;
    char ch='A';
    printf("Enter the number of rows: \n");
//Takes input from the user for number of rows
    scanf("%d",&rows);
    i=1;
    do{
            j=1;
        do{
        printf("%c ",ch++);
     j++;
    }while(j<=i);
    printf("\n");
    i++;
    }while(i<=rows);
    getch();
    return 0;
}

When the above code is executed, it produces the following results

Program to Alphabet triangle pattern 9

Program  9

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,rows,num,count;
    printf("Enter the number of rows: \n");
//Takes input from the user for number of rows
    scanf("%d",&rows);
    i=1;
    while(i<=rows){
            num=rows-1;
    count=i;
j=1;
       do{
        printf("%2c",(char)(count+64));
        count=count+num;
        num--;
         j++;
    } while( j<=i);
    printf("\n");
     i++;
    }
    getch();
    return 0;
}

When the above code is executed, it produces the following results

Program to Alphabet triangle pattern 10

Program 10

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,k,rows;

    printf("Enter the number of rows\n");
//Takes input from the user for number of rows
    scanf("%d",&rows);
    i=rows;
    do{
        k=i;
        j=1;
        do{
            printf("%c",(char)(k+64));
j++;
k++;
        }while(j<=i);
        printf("\n");
i--;
    }while(i>=1);
    getch();
    return 0;
}

When the above code is executed, it produces the following results

 

Program to Alphabet triangle pattern 11

Program 11

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,k,rows;

    printf("Enter the number of rows\n");
//Takes input from the user for number of rows
    scanf("%d",&rows);
    i=1;
    do{
        j=1;
        do{
                printf(" ");

j++;
        }while(j<=rows-i+1);
        k=1;
       do{

            printf("%c",(char)(k+64));
k++;
        } while(k<=i);
        printf("\n");
i++;
    }while(i<=rows);
    getch();
    return 0;
}

When the above code is executed, it produces the following results

 

Program to Alphabet triangle pattern 12

Program 12

#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,j,k,rows;

    printf("Enter the number of rows\n");
//Takes input from the user for number of rows
    scanf("%d",&rows);
    i=1;
   do{
        j=1;
        do{
                printf(" ");

j++;
        }while(j<=rows-i);
        k=1;
        do{

            printf("%c",(char)(j+64));
k++;
        }while(k<=i);
        printf("\n");
i++;
    } while(i<=rows);
    getch();
    return 0;
}

When the above code is executed, it produces the following results

 

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