Write a C program to read name and marks of n number of students from user and store them in a file
#include
int main(){
char name[50];
int marks,i,n;
printf("Enter number of students: ");
scanf("%d",&n);
FILE *fptr;
fptr=(fopen("C:\\student.txt","w"));
if(fptr==NULL){
printf("Error!");
exit(1);
}
for(i=0;i
{
printf("For student%d\nEnter name: ",i+1);
scanf("%s",name);
printf("Enter marks: ");
scanf("%d",&marks);
fprintf(fptr,"\nName: %s \nMarks=%d \n",name,marks);
}
fclose(fptr);
return 0;
}
Write a C program to read name and marks of n number of students from user and store them in a file. If the file previously exits, add the information of n students.
#include
int main(){
char name[50];
int marks,i,n;
printf("Enter number of students: ");
scanf("%d",&n);
FILE *fptr;
fptr=(fopen("C:\\student.txt","a"));
if(fptr==NULL){
printf("Error!");
exit(1);
}
for(i=0;i
{
printf("For student%d\nEnter name: ",i+1);
scanf("%s",name);
printf("Enter marks: ");
scanf("%d",&marks);
fprintf(fptr,"\nName: %s \nMarks=%d \n",name,marks);
}
fclose(fptr);
return 0;
}
Write a C program to write all the members of an array of strcures to a file using fwrite(). Read the array from the file and display on the screen.
#include
struct s
{
char name[50];
int height;
};
int main(){
struct s a[5],b[5];
FILE *fptr;
int i;
fptr=fopen("file.txt","wb");
for(i=0;i
{
fflush(stdin);
printf("Enter name: ");
gets(a[i].name);
printf("Enter height: ");
scanf("%d",&a[i].height);
}
fwrite(a,sizeof(a),1,fptr);
fclose(fptr);
fptr=fopen("file.txt","rb");
fread(b,sizeof(b),1,fptr);
for(i=0;i
{
printf("Name: %s\nHeight: %d",b[i].name,b[i].height);
}
fclose(fptr);
}
