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2-alphabet-triangle.c
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2-alphabet-triangle.c
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/*
Write a C program to printf a pattern of alphabets seperated by spaces for the given nunber of rows.
Input...
>>> Enter number of rows : 5
Output...
>>> ABCDEDCBA
ABCD DCBA
ABC CBA
AB BA
A A
*/
#include <stdio.h>
int main() {
int rows;
// Input the number of rows from the user
printf("Enter number of rows: ");
scanf("%d", &rows);
// Loop to print the alphabet pattern
for (int i = 0; i < rows; i++) {
// Print spaces for the first part of the row
for (int j = 0; j < i; j++) {
printf(" ");
}
// Print characters in ascending order
for (char ch = 'A'; ch <= 'A' + rows - i - 1; ch++) {
printf("%c", ch);
}
// Print characters in descending order
for (char ch = 'A' + rows - i - 2; ch >= 'A'; ch--) {
printf("%c", ch);
}
printf("\n");
}
return 0;
}
// Method 2
#include <stdio.h>
int main(){
int i, j, k;
for (i = 1; i <= 4; i++){
k = 'A';
for (j = 1; j <= 7; j++){
if (j <= 5 - i || j >= 3 + i){
printf("%c", k);
j < 4 ? k++ : k--;
}
else{
printf(" ");
if (j == 4){
k--;
}
}
}
printf("\n");
}
}
// Method 3 Operational
int main(void) {
int n = 2;
for (int i = 0; i < n; i++) {
for (int j = 0; j < n - i; j++) {
printf("%c", 'A'+j);
}
for (int j = 0; j < i; j++) {
printf(" ");
}
for (int j = 0; j < i - 1; j++) {
printf(" ");
}
for (int j = n - i - 1; j >= 0; j--) {
// Skip the first letter
if (j == n - 1) continue;
printf("%c", 'A'+j);
}
printf("\n");
}
}