//Program to find the sum of all substrings of a string representing a number:
Tue May 07 2024 15:17:01 GMT+0000 (Coordinated Universal Time)
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@vedanti
#include <stdio.h>
#include <string.h>
int sum_of_substrings(char *num) {
int sum = 0;
int len = strlen(num);
for (int i = 0; i < len; i++) {
int val = 0;
for (int j = i; j < len; j++) {
val = val * 10 + (num[j] - '0');
sum += val;
}
}
return sum;
}
int main() {
char num[] = "1234";
printf("Sum of all substrings of '%s': %d\n", num, sum_of_substrings(num));
return 0;
}
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