Structure and DMA
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C Program to Store Information (Name, ID and Salary) of a Employee Using Structure.
#include<stdio.h>
struct Employee{
int id;
char name[50];
float salary;
};
int main( ) {
struct Employee s;
printf("Enter Info. of Emp :\n");
printf("Enter the ID : ");
scanf("%d",&s.id);
printf("Enter Name : ");
scanf("%s",s.name);
printf("Enter salary : ");
scanf("%f",&s.salary);
printf("Display Info. : \n");
printf("Name : %s\n",s.name);
printf("Id : %d\n",s.id);
printf("Sal : %f\n", s.salary);
return 0;
}
OUTPUT :
Enter information of Emp : Enter the ID : 39 Enter name : xyz Enter Salary : 30000 Display Info. : Name : xyz Id : 39 Salary : 30000.0000
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#include<stdio.h>
typedef struct complex{
float r;
float i;
}complex;
complex add(complex n1,complex n2);
int main( ) {
complex n1,n2,t;
printf("For 1st complex no. : \n");
printf("Enter real & imag. part:");
scanf("%f%f",&n1.r,&n1.i);
printf("For 2nd complex no. : ");
printf("Enter real & imag. part:");
scanf("%f%f",&n2.r,&n2.i);
t=add(n1,n2);
printf("Sum=%.1f+%.1fi",t.r,t.i);
return 0;
}
complex add(complex n1,complex n2) {
complex temp;
temp.r=n1.r+n2.r;
temp.i=n1.i+n2.i;
return(temp);
}
OUTPUT :
For 1st complex number : Enter real & imaginary respectively : 3 4.5 For 2nd complex number : Enter real & imaginary respectively : 3.2 5 Sum = 6.2 + 9.5i
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#include<stdio.h>
struct Distance {
int meter;
float cm;
} d1,d2,sum;
int main( ) {
printf("Enter Info of Distance1:");
printf("Enter meter: ");
scanf("%d",&d1.meter);
printf("Enter cm: ");
scanf("%f",&d1.cm);
printf("Enter Info of Distance2:");
printf("Enter meter : ");
scanf("%d",&d2.meter);
printf("Enter cm : ");
scanf("%f",&d2.cm);
sum.meter=d1.meter+d2.meter;
sum.cm=d1.cm+d2.cm;
if (sum.cm>100.0) {
sum.cm=sum.cm-100.0;
++sum.meter;
}
printf("\nSum of distances = %dm ,%.1fcm",sum.meter,sum.cm);
return 0;
}
OUTPUT :
Enter Info of Distance1 : Enter meter : 7 Enter cm : 85 Enter Info of Distence2 : Enter meter : 10 Enter cm : 65 Sum of distances = 18m, 50cm
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#include<stdio.h>
struct Employee{
char name[50];
int id;
float salary;
};
int main( ){
struct Employee s[10];
int i;
printf("Enter Info of Emps : \n");
for(i=0;i<10;++i) {
s[i].id=i+1;
printf("\nFor id number %d\n",s[i].id);
printf("Enter name: ");
scanf("%s",s[i].name);
printf("Enter salary: ");
scanf("%f",&s[i].salary);
printf("\n");
}
printf("Information of Emps:\n");
for(i=0;i<10;++i) {
printf("Info for id number %d:\n",i+1);
printf("Name : ");
puts(s[i].name);
printf("salary : %.1f",s[i].salary);
}
return 0;
}
OUTPUT :
Enter Info of Emps : For id number 1 Enter Name : xyz Enter Salary : 5000 For id number 2 Enter Name : abc Enter Salary : 15000 . . Information of Emps : Info for id number 1 Name : xyz Salary : 5000 Name : abc Salary : 15000 . .
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#include<stdio.h>
#include<stdlib.h>
struct Employee {
int id;
char name[30];
};
int main( ) {
struct Employee *ptr;
int i,n;
printf("Enter Number of Employee : ");
scanf("%d",&n);
ptr=(struct Employee*)malloc(n*sizeof(struct Employee));
for(i=0;i < n;++i) {
printf("Enter Name and ID respectively:\n");
scanf("%s%d",&(ptr+i)->name, &(ptr+i)->id);
}
printf("Displaying Information :\n");
for(i=0;iname,(ptr+i)->id);
return 0;
}
OUTPUT :
Enter Number of Employee : 2 Enter Name and ID respectively : xyz 39 Enter Name and ID respectively : abc 45 Displaying Information : xyz 39 abc 40
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#include<stdio.h>
struct TIME{
int s;
int m;
int h;
};
void Difference(struct TIME t1, struct TIME t2, struct TIME *diff);
int main( ){
struct TIME t1,t2,diff;
printf("Enter Start Time [hh:mm:ss]: ");
scanf("%d:%d:%d",&t1.h,&t1.m,&t1.s);
printf("Enter Stop Time [hh:mm:ss]: ");
scanf("%d:%d:%d",&t2.h,&t2.m,&t2.s);
Difference(t1,t2,&diff);
printf("TIME DIFFERENCE: ");
printf("%d:%d:%d\n",diff.h,diff.m,diff.s);
return 0;
}
void Difference(struct TIME t1, struct TIME t2, struct TIME *differ){
if(t2.s>t1.s){
--t1.m;
t1.s+=60;
}
differ->s=t1.s-t2.s;
if(t2.m>t1.m){
--t1.h;
t1.m+=60;
}
differ->m=t1.m-t2.m;
differ->h=t1.h-t2.h;
}
OUTPUT :
Enter Start Time [hh:mm:ss]: 2:23:46 Enter Stop Time [hh:mm:ss]: 1:13:46 TIME DIFFERENCE: 1:10:00
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#include<stdio.h>
#include<stdlib.h>
int main(){
int n,i,*ptr,sum=0;
printf("Enter Number of Elements : ");
scanf("%d",&n);
ptr=(int*)malloc(n*sizeof(int));
if(ptr==NULL) {
printf("Error! memory not allocated.");
exit(0);
}
printf("Enter Elements of array : ");
for(i=0; i < n; ++i) {
scanf("%d",ptr+i);
sum+=*(ptr+i);
}
printf("Sum = %d",sum);
free(ptr);
return 0;
}
OUTPUT :
Enter Number of Elements : 2 Enter Elements of array : 2 4 Sum = 6
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#include<stdio.h>
#include<stdlib.h>
int main( ) {
int n,i,*ptr,sum=0;
printf("Enter Number of Elements: ");
scanf("%d",&n);
ptr=(int*)calloc(n,sizeof(int));
if(ptr==NULL) {
printf("Error! memory not allocated.");
exit(0);
}
printf("Enter Elements of array : ");
for(i=0; i < n; ++i) {
scanf("%d",ptr+i);
sum+=*(ptr+i);
}
printf("Sum = %d",sum);
free(ptr);
return 0;
}
OUTPUT :
Enter the Number of Elements : 2 Enter Elements of array : 2 4 Sum = 6
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#include<stdio.h>
#include<stdlib.h>
int main( ) {
int *ptr,i,n1,n2;
printf("Enter size of Array : ");
scanf("%d",&n1);
ptr=(int*)malloc(n1*sizeof(int));
printf("Address of previously allocated memory : \n");
for(i=0; i < n1; ++i)
printf("%u\t",ptr+i);
printf("\nEnter new size of array: ");
scanf("%d",&n2);
ptr=realloc(ptr,n2);
printf("New Allocated memory :\n");
for(i=0; i < n2;++i)
printf("%u\t",ptr+i);
return 0;
}
OUTPUT :
Enter size of Array : 5 Address of previously allocated memory : 1002 1006 1010 1014 1018 Enter new size of array : 2 New Allocated memory : 1002 1006
