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- #include <stdio.h>
- #include <stdlib.h>
- int main(int argc, char *argv[], char *envp[]) {
- int i=0;
- while(envp[i] != NULL) {
- printf("%s\n", envp[i++]);
- }
- setenv("HUGO", "hugo", 0);
- char *string = malloc(25*sizeof(char));
- printf("Bitte geben Sie eine Umgebungsvariable ein: ");
- scanf("%20s", string);
- if(getenv(string)) {
- printf("%s\n", getenv(string));
- }
- else {
- printf("FEHLER: Umgebungsvariable existiert nicht!\n");
- }
- return 0;
- }
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