lab 5 tp 23.03.2018

//prob 1

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

int main()
{
    FILE *fout,*fin;
    fout=fopen("date.out","w");
    fin=fopen("date.in","r");

    int x,i,a,b,n; // ordinea in fisier: n, a, b

    fscanf(fin,"%d %d %d",&n,&a,&b);

    srand(time(NULL));

    for (i=0; i<n; i++)
    {
        x = rand()%(b-a+1)+a;
        fprintf(fout,"%d ",x);
    }

    return 0;
}

//prob2
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
/*
int main()
{
    FILE *fout,*fin;
    fout=fopen("date.out","w");
    fin=fopen("date.in","r");

    int x,i,a,b,n; // ordinea in fisier: n, a, b

    fscanf(fin,"%d %d %d",&n,&a,&b);

    srand(time(NULL));

    for (i=0; i<n; i++)
    {
        x = rand()%(b-a+1)+a;
        fprintf(fout,"%d ",x);
    }




    return 0;
}
*/

int main()
{
    FILE *fin;
    fin=fopen("date.in","r");

    int x,v[100],i,j,ok = 0;

    fscanf(fin,"%d",&x);
    printf("x = %d\n",x);

    for (i=0; i<10; i++)
        fscanf(fin,"%d",&v[i]);
    for (i=0; i<10; i++)
        printf("v[%d] = %d \n",i,v[i]);

    clock_t a,b;
    a = clock();

    for (i=0; i<10; i++)
        {for (j=0; j<10; j++)
            if ( v[i] + v[j] == x  )
                {printf("\nNumarul %d si numarul %d, de pe poz. %d, repsectiv %d adunate dau numarul %d.\n",v[i],v[j],i,j,x);
                    break;
                }
            if (j<10)
                break;
        }



    b = clock();
    float t = (float)(b-a)/CLOCKS_PER_SEC;
    printf("\nTimpul necesar a fost de %f\n\n",(b-a)/CLOCKS_PER_SEC);

    return 0;
}

//problema 2 varianta 2
int main()
{
    FILE *fin;
    fin=fopen("date.in","r");

    int x,v[100],i,j,ok = 0;

    fscanf(fin,"%d",&x);
    printf("x = %d\n",x);

    for (i=0; i<10; i++)
        fscanf(fin,"%d",&v[i]);
    for (i=0; i<10; i++)
        printf("v[%d] = %d \n",i,v[i]);

    clock_t a,b;
    a = clock();

    i = 0; j = 9;
    int s;

    while (i <=9 && j>=0 )
    {
        s = 0;
        s = v[i] + v[j];

        if (s == x && i!=j)
        {
            printf("\nNumarul %d si numarul %d, de pe poz. %d, repsectiv %d adunate dau numarul %d.\n",v[i],v[j],i,j,x);
                    break;
        }
        else if (s < x)
            i++;
        else if (s > x)
            j--;
    }

    b = clock();
    float t = (float)(b-a)/CLOCKS_PER_SEC;
    printf("\nTimpul necesar a fost de %.20f\n\n",t);

    return 0;
}