Preview:
#include <stdio.h>
int fib(int a);

int main() {
    int a;
    printf("enter the number\n");
    scanf("%d" , &a);
    
    
    printf("the sequence will be %d" , fib(a));
	//code
	return 0;
}

int fib(int a){
    int f;
    if (a == 1 || a == 2){
        return 1;
        
    }else{
        f = fib(a-2) + fib(a-1);
        return f;
    }
}
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