solution_ex4

#include<stdio.h>
#include<string.h>
#include <stdlib.h>
void main()
{
    char ch1[30],ch1n[30];
    char ch2[30],ch2n[30];
    int k,i;
    printf("ch1=");
    scanf("%s",&ch1);
    printf("\n ch2=");
    scanf("%s",&ch2);
    k=0;
    ch1n[0] = '\0';
    for(i=0;i<strlen(ch1);i++)
    {
        if(ch1[i]>='0' && ch1[i]<='9')
        {
            ch1n[k]=ch1[i];
            k++;
        }
    }
    k=0;
    ch2n[0] = '\0';
    for(i=0;i<strlen(ch2);i++)
    {
        if(ch2[i]>='0' && ch2[i]<='9')
        {
            ch2n[k]=ch2[i];
            k++;
        }

    }
    printf("la somme des chiffres dans le deux chaines est: %d",atoi(ch1n)+atoi(ch2n));
    system("pause");
}