Question

Problems: 41 points total Each of these very short programs has something wrong with it. Explain what, and explain how to fix it. Your answers should each be two sentences or less. Headers are intentionally omitted; that is not the problem. Problem 1 (5) int main() { fprintf("Hello, world!\n"); return 0; } Problem 2 (5) int main() { char s[80]; printf("Say something: "); s = fgets(80, stdin); printf("You said %s.\n", s); return 0; } Problem 3 (5) int main() { FILE ofp; int n = 10; Problem 4 (10) struct coord_struct { double x; double y; }; typedef struct coord_struct coord; int main() { char s; coord *c = malloc(sizeof(coord)); printf("Enter x: "); fgets(s, 79, stdin); c->x = atof(s); printf("Enter y: "); fgets(s, 79, stdin); c->y = atof(s); printf("Coords are (%lf, %lf).\n", c->x, c->y); free(c); free(s); return 0; }

          Problems: 41 points total
Each of these very short programs has something wrong with it. Explain what, and explain how to fix it. Your answers
should each be two sentences or less. Headers are intentionally omitted; that is not the problem.
Problem 1 (5)
int main() {
fprintf("Hello, world!\n");
return 0;
}
Problem 2 (5)
int main() {
char s[80];
printf("Say something: ");
s = fgets(80, stdin);
printf("You said %s.\n", s);
return 0;
}
Problem 3 (5)
int main() {
FILE *ofp;
int n = 10;
Problem 4 (10)
struct coord_struct {
double x;
double y;
};
typedef struct coord_struct coord;
int main() {
char *s;
coord *c = malloc(sizeof(coord));
printf("Enter x: ");
fgets(s, 79, stdin);
c->x = atof(s);
printf("Enter y: ");
fgets(s, 79, stdin);
c->y = atof(s);
printf("Coords are (%lf, %lf).\n", c->x, c->y);
free(c);
free(s);
return 0;
}

$Problems: 41 points total Each of these very short programs has something wrong with it. Explain what, and explain how to fix it. Your answers should each be two sentences or less. Headers are intentionally omitted; that is not the problem. Problem 1 (5) int main() fprintf("Hello, world!"); return 0; Problem 2 (5) int main() char s[80]; printf("Say something: "); s = fgets(80, stdin); printf("You said %s.\n", s); return 0; Problem 3 (5) int main() FILE *ofp; int n = 10; Problem 4 (10) struct coordstruct double x; double y; ; typedef struct coordstruct coord; int main() char *s; coord *c = malloc(sizeof(coord)); printf("Enter x: "); fgets(s, 79, stdin); c->x = atof(s); printf("Enter y: "); fgets(s, 79, stdin); c->y = atof(s); printf("Coords are (%lf, %lf).\n", c->x, c->y); free(c); free(s); return 0;$

Added by Kevin E.

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