c语言练习代码.docVIP

c语言练习代码 #include stdio.h main() { printf(hello, world\n); } #include stdio.h /* print Fahrenheit-Celsius table for fahr = 0, 20, ..., 300 */ main() { int fahr, celsius; int lower, upper, step; lower = 0; /* lower limit of temperature scale */ upper = 300; /* upper limit */ step = 20; /* step size */ fahr = lower; while (fahr = upper) { celsius = 5 * (fahr-32) / 9; printf(%d\t%d\n, fahr, celsius); fahr = fahr + step; } } #include stdio.h /* print Fahrenheit-Celsius table for fahr = 0, 20, ..., 300; floating-point version */ main() { float fahr, celsius; float lower, upper, step; lower = 0; /* lower limit of temperatuire scale */ upper = 300; /* upper limit */ step = 20; /* step size */ fahr = lower; while (fahr = upper) { celsius = (5.0/9.0) * (fahr-32.0); printf(%3.0f %6.1f\n, fahr, celsius); fahr = fahr + step; } } #include stdio.h /* print Fahrenheit-Celsius table */ main() { int fahr; for (fahr = 0; fahr = 300; fahr = fahr + 20) printf(%3d %6.1f\n, fahr, (5.0/9.0)*(fahr-32)); } #include stdio.h #define LOWER 0 /* lower limit of table */ #define UPPER 300 /* upper limit */ #define STEP 20 /* step size */ /* print Fahrenheit-Celsius table */ main() { int fahr; for (fahr = LOWER; fahr = UPPER; fahr = fahr + STEP) printf(%3d %6.1f\n, fahr, (5.0/9.0)*(fahr-32)); } #include stdio.h /* copy input to output; 1st version */ main() { int c; c = getchar(); while (c != EOF) { putchar(c); c = getchar(); } } #include stdio.h /* copy input to output; 2nd version */ main() { int c; while ((c = getchar()) != EOF) putchar(c); } #include stdio.h /* count characters in inp