C Program to Print Floyd's Triangle.

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#include
int main()
 {
    int rows, i, j, number= 1;
    printf("Enter number of rows:\n");
    fflush(stdout);
    scanf("%d", &rows);
    for (i=1; i<=rows; i++)
     {
        for (j=1; j<=i; j++)
        { 
        printf("%d ", number);
          number++;
        }
        printf("\n");
    }
    return 0;
}

1

2 3

4 5 6

7 8 9 10

#include
int main()
 {
    int rows, i, j, number= 1;
    printf("Enter number of rows:\n");
    fflush(stdout);
    scanf("%d", &rows);
    for (i=1; i<=rows; i++)
     {
        for (j=1; j<=i; j++)
        { 
        printf("%d ", number);
          number++;
        }
        printf("\n");
    }
    return 0;
}