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Cornel Iulian

[C] Suma cifrelor unui numar intreg. Programul se executa pana la n sau N.

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Cerinta: Pentru un numar intreg n preluat de la consola sa se calculeze suma cifrelor sale. Programul interogheaza repetat operatorul asupra continuarii executiei, aceasta incheindu-se atunci cand la intrebarea "Doriti sa continuati?" operatorul raspunde tastand n sau N.

#include <stdio.h>
#include <stdlib.h>

int main(void)
{
	int cifra,n,s;
	char ch;

	do
	{
		printf("Introduceti numarul: ");
		if(scanf("%d",&n)!=1||n<0)
		{
			printf("Date eronate");
			exit(1);
		}
		s=0;
		do
		{
			cifra=n%10;
			s+=cifra;
			n=n/10;
		}
		while(n);
		printf("Suma este: %d",s);
		fflush(stdin);
		printf("\nDoriti sa continuati?(n/d)");
		scanf("%c",&ch);	
	}
	while(ch!='n'&&ch!='N');
	return 0;
}

 

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