This C program prints the Fibonacci sequence up to a number entered by the user. It initializes the first two numbers of the sequence to 0 and 1. Then, it uses a for loop to calculate each subsequent number by adding the previous two numbers, and prints the result. This allows it to generate and display the full Fibonacci sequence up to the limit provided.

1. C
#include <stdio.h>
int main() {
int n1=0,n2=1,n3,i,number;
printf("enter a number:");
scanf("%d",&number);
printf(" %d %d",n1,n2);
for(i=1;i<number;i++)
{
n3=n1+n2;
printf(" %d",n3);
n1=n2;
n2=n3;
}
return 0;
}
Output
enter a number:5
0 1 1 2 3 5