Does anyone know why I'm not running?

#include <stdio.h>
main()
{
    float n1,n2;
    do {
        printf("Informe dois numeos:");
        scanf("%f %f", &n1, &n2);
        if (n1>n2){
          printf("DECRESCENTE"); }
        else {
          printf("CRESCENTE"); }
}
    while (n1!=n2);
     system("pause");

}

Can anyone tell me why it's not running? Give these errors

  

C: \ Program Files   (x86) \ Dev-Cpp \ MinGW64 \ x86_64-w64-mingw32 \ bin \ ld.exe can not open output   file C: \ Users \ Andressa Lilja \ Desktop \ IF \ PROGRAMMING \ 5.4.exe:   Permission denied   C: \ Users \ Andressa Lilja \ Desktop \ IF \ PROGRAMMING \ collect2.exe [Error] ld returned 1 exit status