#include <stdio.h>

int main()
{
    int v[51], i, j, maxp = 0, n, val;

    printf("donner la taille de v : ");
    scanf("%d",&n);

    for(i = 0; i < n; i++) {
        do{
            printf("donner l'élément numero %d strictement positif : ", i+1);
            scanf("%d", &v[i]);
        } while(v[i] < 0);
    }

    /* you could have done this following block of code while scanning the elements of the array above */
    for(i = 0; i < n; i++)
        if(v[i] % 2 == 0 && maxp < v[i]) maxp = v[i];

    printf("le max des valeures paires est : %d\n", maxp);
    printf("svp donner val : ");
    scanf("%d", &val);

    if(maxp < val) {
        for(i = 0; i < n; i++) {
            /*
            for(j = i+1; j < n; j++) {
                if(v[i] % 2 != 0 && v[j] % 2 == 0) {
                    You shouldn't have swaped
                    int m = v[j];
                    v[j] = v[i];
                    v[i] = m;
                }
            }*/
            if(v[i] % 2 == 0) {
                for(int j = i-1; v[j] % 2 != 0 && j >= 0; j--)
                {
                    int tmp = v[j];
                    v[j] = v[j+1];
                    v[j+1] = tmp;
                }
            }
        }
    }

    for(i = 0; i < n; i++) {
        printf("%d ", v[i]);
    }

    return 0;
}