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#include <iostream>
#include <fstream>
#include <string>
#include <cstdio>
#include <ctime>
#include <cstdlib>
#include <iomanip>
#include <cctype>
using namespace std;
const int N=10000000,NC=10*N;
int a[N],swtime,swsize;
char s[NC];
char sw[16*N];
void gen() {
for (int i=0;i<N;i++) {
a[i]=rand();
}
for (int i=0;i<NC;i++) {
s[i]=rand()%10+'0';
}
int cur=clock();
swsize=0;
for (int i=0;i<N;i++) {
char s[100];
sprintf(s,"%d",a[i]);
for (int j=0;s[j];j++) {
sw[swsize++]=s[j];
}
sw[swsize++]=' ';
}
swtime=clock()-cur;
}
void test_printf_int() {
int cur=clock();
FILE *f = fopen("temp.txt", "w");
for (int i=0;i<N;i++)
fprintf(f, "%d ",a[i]);
fclose(f);
fprintf(stderr,"Test: (printf, %d ints) %.2lfc\n",N,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_cout_int() {
int cur=clock();
ofstream f("temp.txt");
for (int i=0;i<N;i++)
f << a[i] << ' ';
f.close();
fprintf(stderr,"Test: (cout, %d ints) %.2lfc\n",N,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_write_int() {
int cur=clock();
ofstream f("temp.txt");
f.write(sw,swsize);
f.close();
fprintf(stderr,"Test: (write, %d ints, %d chars) %.2lfc + %.2lfc\n",N,swsize,(swtime+.0)/CLOCKS_PER_SEC,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_fwrite_int() {
int cur=clock();
FILE *f = fopen("temp.txt", "w");
fwrite(sw,1,swsize,f);
fclose(f);
fprintf(stderr,"Test: (fwrite, %d ints, %d chars) %.2lfc + %.2lfc\n",N,swsize,(swtime+.0)/CLOCKS_PER_SEC,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_scanf_int() {
int cur=clock();
FILE *f = fopen("temp.txt", "r");
for (int i=0;i<N;i++) {
int t;
fscanf(f, "%d",&t);
if (t!=a[i]) {
fprintf(stderr,"Fail with scanf\n");
exit(1);
}
}
fclose(f);
fprintf(stderr,"Test: (scanf, %d ints) %.2lfc\n",N,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_cin_int() {
int cur=clock();
ifstream f("temp.txt");
for (int i=0;i<N;i++) {
int t;
f >> t;
if (t!=a[i]) {
fprintf(stderr,"Fail with cin\n");
exit(1);
}
}
f.close();
fprintf(stderr,"Test: (cin, %d ints) %.2lfc\n",N,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_printf_char() {
int cur=clock();
FILE *f = fopen("temp.txt", "w");
for (int i=0;i<NC;i++)
fprintf(f, "%c",s[i]);
fclose(f);
fprintf(stderr,"Test: (printf, %d chars) %.2lfc\n",NC,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_cout_char() {
int cur=clock();
ofstream f("temp.txt");
for (int i=0;i<NC;i++)
f << s[i];
f.close();
fprintf(stderr,"Test: (cout, %d chars) %.2lfc\n",NC,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_putchar_char() {
int cur=clock();
FILE *f = fopen("temp.txt", "w");
for (int i=0;i<NC;i++)
fputc(s[i], f);
fclose(f);
fprintf(stderr,"Test: (putchar, %d chars) %.2lfc\n",NC,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_scanf_char() {
int cur=clock();
FILE *f = fopen("temp.txt", "r");
for (int i=0;i<NC;i++) {
char t;
fscanf(f, "%c",&t);
if (t!=s[i]) {
fprintf(stderr,"Fail with scanf\n");
exit(1);
}
}
fclose(f);
fprintf(stderr,"Test: (scanf, %d chars) %.2lfc\n",NC,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_cin_char() {
int cur=clock();
ifstream f("temp.txt");
for (int i=0;i<NC;i++) {
char t;
f >> t;
if (t!=s[i]) {
fprintf(stderr,"Fail with cin\n");
exit(1);
}
}
f.close();
fprintf(stderr,"Test: (cin, %d chars) %.2lfc\n",NC,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_getchar_char() {
int cur=clock();
FILE *f = fopen("temp.txt", "r");
for (int i=0;i<NC;i++) {
char t = fgetc(f);
if (t!=s[i]) {
fprintf(stderr,"Fail with getchar\n");
exit(1);
}
}
fclose(f);
fprintf(stderr,"Test: (getchar, %d chars) %.2lfc\n",NC,(clock()-cur+.0)/CLOCKS_PER_SEC);
}
void test_read_char() {
int cur=clock();
freopen("temp.txt","r",stdin);
cin.read(sw,NC);
fclose(stdin);
int cur2=clock();
for (int i=0;i<NC;i++)
if (s[i]!=sw[i]) {
cerr << i << ' ' << (int)s[i] << ' ' << (int)sw[i] << endl;
fprintf(stderr,"Fail with read\n");
exit(1);
}
fprintf(stderr,"Test: (read, %d chars) %.2lfc + %.2lfc\n",NC,(cur2-cur+.0)/CLOCKS_PER_SEC,(clock()-cur2+.0)/CLOCKS_PER_SEC);
}
void test_fread_char() {
int cur=clock();
freopen("temp.txt","r",stdin);
fread(sw,1,NC,stdin);
fclose(stdin);
int cur2=clock();
for (int i=0;i<NC;i++)
if (s[i]!=sw[i]) {
fprintf(stderr,"Fail with fread\n");
exit(1);
}
fprintf(stderr,"Test: (fread, %d chars) %.2lfc + %.2lfc\n",NC,(cur2-cur+.0)/CLOCKS_PER_SEC,(clock()-cur2+.0)/CLOCKS_PER_SEC);
}
int main () {
std::ios_base::sync_with_stdio(false);
gen();
test_printf_int();
test_cout_int();
test_write_int();
test_scanf_int();
test_fwrite_int();
test_cin_int();
test_printf_char();
test_scanf_char();
test_cout_char();
test_cin_char();
test_putchar_char();
test_getchar_char();
test_read_char();
test_fread_char();
}
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