36 lines
667 B
C
36 lines
667 B
C
#include <stdio.h>
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int
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main(int argc, char** argv) {
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FILE *fp;
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int i;
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char * output = "/tmp/io-test.txt";
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if(argc == 2){
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output = argv[1];
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}else if(argc > 2){
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printf("usage: %s [output]", argv[0]);
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return 100;
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}
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fp = fopen(output, "w+");
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if(fp == NULL){
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printf("Can't open %s", output);
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return 1;
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}
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i = fprintf(fp, "%s works.\n", "fprintf");
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if(i <= 0){
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fclose(fp);
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printf("Can't write 'fprintf works.' to %s (fprintf returned %d)", output, i);
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return 2;
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}
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i = fputs("fputs works.\n", fp);
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if(i == EOF){
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fclose(fp);
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printf("Can't write 'fputs works.' to %s (fputs returned EOF)", output);
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return 3;
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}
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fclose(fp);
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return 0;
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}
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