A little problem with C

[Irfanerol]

Hi my program isn't work well. There's a little problem. Maybe someone could help me? My gets(name) is not working. program always pass the gets line after executing it. I couldn't enter anything to name variable. And also this problem is only happening in a loop? What's the problem you think?


Here is the program

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


main()
{
	char name[30], sex;
	int n, counter, age;
	double gpa;

	FILE *inp, *outp;

	inp = fopen("stdlist.txt", "r");
	outp = fopen("stdlist.dat", "w");
	
	printf("How many students: ");
	scanf("%d", &counter);
	n=1;
	while(n<counter)
	{
		puts("Please enter student's name:");
	    gets(name);
		printf("Please enter student's sex (M or F): ");
		scanf("%c", &sex);
		printf("Please enter student's age: ");
		scanf("%d", &age);
		printf("Please enter student's GPA: ");
		scanf("%lf", &gpa);
		system("cls");


		printf("\n\n----------------------------------------\n\n");
		printf("This student's information is \nname: %s\nsex: %c\nage: %d\nGPA: %lf\n", name, sex, age, gpa);
		printf("\n------------------------------------------\n\n");


		printf("Please press a key for print these values to output file.\n");
		getch();
		fprintf(outp, "----------------------------------------------\nName:      %s\nSex:       %c\nAge:       %d\nGPA:       %0.2lf\n-----------------------------------------------\n\n", name, sex, age, gpa);
		n++;
	}
	return 0;
}

[dcs]

Question 12.18a

[mgoktwo]

i have changed somethings in your source code and i think it looks ok now...try this...

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


main()
{
char name[30], sex[2];
int n, counter, age;
double gpa;

FILE *inp, *outp;

inp = fopen("stdlist.txt", "r");
outp = fopen("stdlist.dat", "w");

printf("How many students: ");
scanf("%d", &counter);
n=1;
do
{
printf("Please enter student's name:");
scanf("%s",name);
printf("Please enter student's sex (M or F): ");
scanf("%s", sex);
printf("Please enter student's age: ");
scanf("%d", &age);
printf("Please enter student's GPA: ");
scanf("%lf", &gpa);
system("cls");


printf("\n\n----------------------------------------\n\n");
printf("This student's information is \nname: %s\nsex: %c\nage: %d\nGPA: %lf\n", name, sex, age, gpa);
printf("\n------------------------------------------\n\n");


printf("Please press a key for print these values to output file.\n");
getch();
fprintf(outp, "----------------------------------------------\nName: %s\nSex: %c\nAge: %d\nGPA: %0.2lf\n-----------------------------------------------\n\n", name, sex, age, gpa);
n++;
}
while(n<counter);
return 0;
}

[mgoktwo]

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


main()
{
	char name[30], sex[2];
	int n, counter, age;
	double gpa;

	FILE *inp, *outp;

	inp = fopen("stdlist.txt", "r");
	outp = fopen("stdlist.dat", "w");
	
	printf("How many students: ");
	scanf("%d", &counter);
	n=1;
	do
	{
		printf("Please enter student's name:");
	    scanf("%s",name);
		printf("Please enter student's sex (M or F): ");
		scanf("%s", sex);
		printf("Please enter student's age: ");
		scanf("%d", &age);
		printf("Please enter student's GPA: ");
		scanf("%lf", &gpa);
		system("cls");


		printf("\n\n----------------------------------------\n\n");
		printf("This student's information is \nname: %s\nsex: %c\nage: %d\nGPA: %lf\n", name, sex, age, gpa);
		printf("\n------------------------------------------\n\n");


		printf("Please press a key for print these values to output file.\n");
		getch();
		fprintf(outp, "----------------------------------------------\nName:      %s\nSex:       %c\nAge:       %d\nGPA:       %0.2lf\n-----------------------------------------------\n\n", name, sex, age, gpa);
		n++;
	}

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


main()
{
	char name[30], sex[2];
	int n, counter, age;
	double gpa;

	FILE *inp, *outp;

	inp = fopen("stdlist.txt", "r");
	outp = fopen("stdlist.dat", "w");
	
	printf("How many students: ");
	scanf("%d", &counter);
	n=1;
	do
	{
		printf("Please enter student's name:");
	    scanf("%s",name);
		printf("Please enter student's sex (M or F): ");
		scanf("%s", sex);
		printf("Please enter student's age: ");
		scanf("%d", &age);
		printf("Please enter student's GPA: ");
		scanf("%lf", &gpa);
		system("cls");


		printf("\n\n----------------------------------------\n\n");
		printf("This student's information is \nname: %s\nsex: %c\nage: %d\nGPA: %lf\n", name, sex, age, gpa);
		printf("\n------------------------------------------\n\n");


		printf("Please press a key for print these values to output file.\n");
		getch();
		fprintf(outp, "----------------------------------------------\nName:      %s\nSex:       %c\nAge:       %d\nGPA:       %0.2lf\n-----------------------------------------------\n\n", name, sex, age, gpa);
		n++;
	}
	while(n<counter);
	return 0;
}
	while(n<counter);
	return 0;
}

[dcs]

User Input: Strings and Numbers [C]