A program that stores the numeric characters in a string separately from other characters-EEWORLD

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C++ programming inputs a string from the keyboard, converts the numeric characters in it into numerical values, stores them in an array, and outputs them

Procedure 1:

#include

using namespace std;

int main()

{

char *ch=new char[]; //define a dynamic char array

int *num=new int[]; //define a dynamic int array

cout<<"Please enter a string of characters:"<

cin>>ch; //input string

cout<<"The numbers in this string are: "<

int a=0;

for(int i=0;i

{

if(ch[i]>='0'&&ch[i]<='9')

{

num[a]=(int)ch[i]-48;//save

cout<

a++;

}

cout<

return 0;

}

Procedure 2:

#include

using namespace std;

int main()

{

char str[]="l34lab454ii876ui43"; //You can define one by yourself or input one from the keyboard

char *p=str;

int i=0; // Calculate the number of numeric characters

int j=0; //control loop output and assignment

while(*p)

{

if(*p>='0'&&*p<='9')

{

i++;

}

p++;

}

p=str; // just now p ran to the end, point to str again

int *pArray=new int[i]; //Create an integer array with i elements to store digital characters

while(*p)

{

if(*p>='0'&&*p<='9')

{

*(pArray+j)=*p-'0'; // Subtract '0' from the numeric character to get the integer, and assign it to the array just created

j++;

}

p++;

}

// Output

for(j=0;j

{

cout<<*(pArray+j)<<" ";

}

cout<

return 0;

}

Reference address：A program that stores the numeric characters in a string separately from other characters

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