33 lines
521 B
Plaintext
33 lines
521 B
Plaintext
/* cf - print character frequencies */
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float f[128];
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int i, c, nc;
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float cutoff, atof();
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if (argc <= 1)
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cutoff = 0.0;
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else
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cutoff = atof(argv[1])/100;
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for (i = 0; i <= 127; )
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f[i++] = 0.0;
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nc = 0;
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while ((c = getchar()) != -1) {
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f[c] += 1;
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nc++;
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}
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printf("char\tfreq\n");
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for (i = 0; i <= 127; ++i)
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if (f[i] && f[i]/nc >= cutoff) {
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if (i <= ' ')
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printf("%03o", i);
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else
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printf("%c", i);
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printf("\t%.1f\n", 100*f[i]/nc);
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}
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return 0;
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}
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