#include <stdio.h> #include <string.h> char *trim(char *str) {     char *p = str;     while (*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')         p ++;     str = p;     p = str + strlen(str) - 1;     while (*p == ' ' || *p == '\t' || *p == '\r' || *p == '\n')         -- p;     *(p + 1) = '\0';     return str; } int main() {  FILE *fp = fopen("test.csv", "r");  if(fp == NULL) {   return -1;  }  char line[1024];  while(fgets(line, sizeof(line), fp)) {   //printf("%s", line);   char *save_ptr;   char *name = strtok_r(line, ",", &save_ptr);   if (name == NULL) {    return -1;   }     char *age = strtok_r(NULL, ",", &save_ptr);   char *birthday = strtok_r(NULL, ",", &save_ptr);   printf("%s\t%s\t%s\n", trim(name), trim(age), trim(birthday));  }  return 0; }

#include <iostream> #include <fstream> #include <sstream> #include <string> #include <vector> using namespace std; string Trim(string& str) {  str.erase(0,str.find_first_not_of(" \t\r\n"));  str.erase(str.find_last_not_of(" \t\r\n") + 1);  return str; } int main() {  ifstream fin("test.csv");  string line;   while (getline(fin, line)) {   //cout << line << endl;   istringstream sin(line);    vector<string> fields;    string field;   while (getline(sin, field, ',')) {    fields.push_back(field);    }   string name = Trim(fields[0]);    string age = Trim(fields[1]);    string birthday = Trim(fields[2]);    cout << name << "\t" << age << "\t" << birthday << endl;  } }

alice, 22, 1992/03/05 bob, 33, 1981/11/21 cart, 40, 1974/07/13