**Fibonacci Series up to n number of terms**

#include <stdio.h>

int main()

{

int i, j, rows;

printf("Enter number of rows: ");

scanf("%d",&rows);

for(i=1; i<=rows; ++i)

{

for(j=1; j<=i; ++j)

{

printf("* ");

}

printf("\n");

}

return 0;

}

**Fibonacci Sequence Up to a Certain Number**

#include <stdio.h>

int main()

{

int t1 = 0, t2 = 1, nextTerm = 0, n;

printf("Enter a positive number: ");

scanf("%d", &n);

// displays the first two terms which is always 0 and 1

printf("Fibonacci Series: %d, %d, ", t1, t2);

nextTerm = t1 + t2;

while(nextTerm <= n)

{

printf("%d, ",nextTerm);

t1 = t2;

t2 = nextTerm;

nextTerm = t1 + t2;

}

return 0;

}