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C99 Section 5.1.2.2.3 has this to say about returning from {{main()}} \[[ISO/IEC 9899-:1999|AA. C References#ISO/IEC 9899-1999]\]: |
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#include <stdlib.h>
#include <stdio.h>
int write_data(void) {
char const *filenamefile name = "hello.txt";
FILE *f = fopen(filenamefile name, "w");
if (f == NULL) {
/* handle error */
}
fprintf(f, "Hello, World\n");
/* ... */
abort(); /* oops! data might not get written! */
/* ... */
return 0;
}
int main(void) {
write_data();
return 0;
}
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#include <stdlib.h>
#include <stdio.h>
int write_data(void) {
char const *filenamefile name = "hello.txt";
FILE *f = fopen(filenamefile name, "w");
if (f == NULL) {
/* handle error */
}
fprintf(f, "Hello, World\n");
/* ... */
exit(EXIT_FAILURE); /* writes data & closes f. */
/* ... */
return 0;
}
int main(void) {
write_data();
return 0;
}
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\[[ISO/IEC 9899-:1999|AA. C References#ISO/IEC 9899-1999]\] Section 5.1.2.2.3, "Program termination," and Section 7.20.4, "Communication with the environment" \[[ISO/IEC PDTR 24772|AA. C References#ISO/IEC PDTR 24772]\] "REU Termination strategy" |
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