44 lines
793 B
C
44 lines
793 B
C
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#include <stdio.h>
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#include <cs50.h>
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#include <string.h>
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// The amount of input lines
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const int lines = 1000;
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int extract_number(char *text);
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int main(void) {
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int sum = 0;
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for (int i = 0; i < lines; i++) {
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sum += extract_number(get_string(""));
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}
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printf("%i\n", sum);
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return 0;
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}
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/* Get the right number from both sides of the string
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*/
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int extract_number(char *text) {
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int length = strlen(text);
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int first;
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for (int i = 0; i < length; i++) {
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char c = text[i];
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if (c >= '0' && c <= '9') {
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first = c - '0';
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break;
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}
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}
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for (int i = 1; i <= length; i++) {
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char c = text[length - i];
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if (c >= '0' && c <= '9') {
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return (first * 10) + (c - '0');
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}
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}
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}
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