Reading from a txt file

[blabla]

Hello! Does anyone know why this is not working? what did I wrote wrong?
This is the txt file:
[e-mail],Ionescu Alexandru,01.10.2012,120
[e-mail],Popescu Marian,01.10.2012,134
[e-mail],Vasilescu Georgel,10.11.2013,99
[e-mail],Ionescu Liviu,17.11.2012,83
[e-mail],Emil Constantin,09.10.2011,210

Thank you!

  #include<iostream>

using namespace std;

struct ContMail {
	char* denumireCont;
	char* numePosesor;
	char* dataDeschidere;
	int nrMesaje;
};

void main() {
	ContMail cont;
	char denC[30];
	char buf[100];
	char prenume[50];
	char dataDesc[50];
	

	FILE* f;
	f = fopen("Conturi.txt","r");
	fscanf(f,"%s",&denC);
	while(!(feof(f))) {
		cont.denumireCont = new char[strlen(denC)+1];
		strcpy(cont.denumireCont,denC);
	
		fscanf(f,"%s %s",buf, prenume);
		strcat(buf," ");
		strcat(buf,prenume);
		strcpy(cont.numePosesor,buf);

		fscanf(f,"%s",&dataDesc);   //aici pun intr-un buffer(&dataDesc) sau in variabila mea (&cont.dataDeschidere)?
		cont.dataDeschidere = new char[strlen(dataDesc)+1];
		strcpy(cont.dataDeschidere,dataDesc);
		
		fscanf(f,"%s",&denC);
	}

}

[MiiNiPaa]

fscanf(f,"%s",&denC); First line of file way larger that 30 symbols: buffer overflow.

strcpy(cont.numePosesor,buf); numePosesor was never initialisated: undefined behavior.