Solutions série1

#include<stdio.h>

#include<conio.h>

int main(void)

{

int x,y,z=0,etat=1;

char c;

printf("donner l'operation à effectuer\n");

scanf("%d%c%d",&x,&c,&y);

switch (c)

{

case '+':z=x+y;break;

case '-' :z=x-y;break;

case '*' :z=x*y;break;

default : printf("%c caractere non valide",c);etat=0;

}

if (etat==1) printf(" = %d",z);

getch();

}

#include<stdio.h>//inttroduire la biblioteque qui definie les instruction utulisées

float somme(float,float);//prototype

void moyenne();prototype

void main()

{

float a,b;

printf("bonjour dans le monde c \n");

printf("donner un nombre");

scanf("%f",&a);

printf("donner un autre");

scanf("%f",&b);

printf("la some de %.2f et %.2f est: %.2f\n" ,a,b,somme(a,b));

moyenne();

getch();

}

float somme(float x,float y)

{

return x+y;

}

void moyenne()//procedure qui calcule la moyenne de n notes

{ float s,note;

int n,i;

printf("donner le nombre de notes");

scanf("%d",&n);

s=0;

for(i=1;i<=n;i++)

{ printf("donner la %d eme note\n",i);

scanf("%f",&note);

s=s+note;

}

printf("la moyenne est:%.2f",s/n);

}

#include<stdio.h>

#include<conio.h>

main(void){

int nb,k,s=0,compt=0;

puts("donner un nombre");

scanf("%d",&nb);

for (k=1;k<=nb;k++)

if ((nb % k)==0) {compt=compt+1;

s=s+k;

}

printf("le nombre de diviseurest:%d\n",compt);

printf("leur somme est:%d",s);

getch();

}

#include<stdio.h>

#include<conio.h>

int main(void)

{

char c;

for (c='a';c<='h';c++)

printf("%c\n",c);

getch();

}

#include <stdio.h>

#include<conio.h>

int main(void){

int s,k;s=0;k=1;

while (s<50)

{

s=s+5*k;k++;

}

printf("la somme est:%d",s);

getch();

}

#include <stdio.h>

#include<conio.h>

int main(void){

int s,k;s=0;k=1;

while (s<50)

{

s=s+5*k;k++;

}

printf("la somme est:%d",s);

getch();

}

#include <stdio.h>

#include<conio.h>

int main(void){

int s,k,n;s=0;k=1;

puts("donner un nombre");

scanf("%d",&n);

while (s<50)

{

s=s+5*k;k++;

}

printf("la somme est:%d",s);

getch();

}

#include <stdio.h>

#include<conio.h>

int main(void){

int s,k,n;s=0;

puts("donner un nombre");

scanf("%d",&n);

for (k=5;k<=n;k++)

s=s+5+k;

printf("la somme est:%d",s);

getch();

}