Thread: Adding numbers in string

This is my first post..i have an issue to write code for this problem.

Add numbers in string:
testcase:
string:

Input

2
abc100asd100
20cc33

Output

200
53

Explanation

100+100=200
20+33=53

I can write program to add all the numbers(1+0+0+1+0+0) in this string
but i find very difficult add (100 + 100)
please help me.please give me a suitable program for this.
Thanks in advance

hey I am new here and I dont realice a question

can anyone guide me please.

Code:

#include <stdio.h>

int string_to_num();

int main() {
    int length = 0;
    int buff = 0;

    printf("Enter Strings:");

         while((length = string_to_num()) > 0) {
        buff = buff+length;
        printf("\n %d \n",length);
    }
    return 0;
}

int string_to_num() {
    int c;
    int oldval = 0;;
    int buff = 0;
    int first_num = -1;
    for(c = 0; c = getchar(), c != EOF && c != '\n';) {
        if(c >= '0' && c <= '9') {
                 buff = (oldval * 10) + (c-48);
            oldval = buff;
        }
        else if(first_num == -1 && oldval != 0) {
            first_num = oldval;
            buff = oldval = 0;
    
        }
    }
        return buff + first_num;
}