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Cod sursa(job #721516)
#include<fstream>
#include<cstring>
using namespace std;
ifstream f("text.in");
ofstream g("text.out");
int nr1,n,i,nr;
char s[100000],v[1000][1000],*p;
int main()
{f.getline(s,1000);
n=strlen(s)-1;
for(i=1;i<=n;i++)
if(s[i]>='a' && s[i]<='z')
nr1++;
nr=0;
p=strtok(s,". -,?!;");
while(p)
{nr++;
strcpy(v[nr],p);
p=strtok(NULL , ". -,?!;");}
g<<nr1/nr;
f.close();
g.close();
return 0;}