floyeds-triangle.c

/*
Floyds Triangle for n rows are

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

#include <stdio.h>
int main(){
    int rows, i, j, num = 1;
    printf("Enter the number of rows : ");
    scanf("%d", &rows);

    for (i = 1 ; i <= rows; i++){
        for (j = 1; j <= i; j++){
            printf("%d ", num);
            num++;
        }
        printf("\n");
    }

    return 0;
}