Hi All
So can data include 5 sets of a,b,c correctly?Code:struct abc { int a; double b; unsigned int c; } struct abc* data; main int { ... data = (struct data*)malloc(5*sizeof(struct data)); ... }
Seems I get segmentation fault, when I include dynamic allocation instead of fixed array.
You probably should get a few compile errors instead. Post the smallest and simplest compilable program that demonstrates the segmentation fault.
Look up a C++ Reference and learn How To Ask Questions The Smart WayOriginally Posted by Bjarne Stroustrup (2000-10-14)
it gives me an error in line of "struct abc* data;": two or more data type declaration.Code:#include <stdio.h> #include <stdlib.h> struct abc { int a; double b; unsigned int c; } struct abc* data; int i; int main () { data = (struct abc*)malloc(5*sizeof(struct abc)); for (i =0; i <5; i++) { data[i].a = i; data[i].b = i; data[i].c = 0.1; } for (i =0; i <5; i++) { printf("%d %d %f\n", data[i], data[i].b, data[i].c); } return 0; }
Why?
Ah, you forgot to end your struct definition with a semi-colon, e.g.,
By the way, avoid global variables and indent your code better.Code:struct abc { int a; double b; unsigned int c; };
Look up a C++ Reference and learn How To Ask Questions The Smart Way
Thank you~
