acho.plt

a = "(｣・ω・)｢"
b = "(｢・ω・)｣"

do for [i=1:100]{ 
    if (i % 2 == 0) {
        set title a font "Arial, 24"
        plot x 
    } else {
        set title b font "Arial, 24"
        plot x**2
    }
    pause 0.3
}

acho2.plt

a = "(｣・ω・)｢"
b = "(｢・ω・)｣"

c = ""
do for [i=1:100]{ 
    if (i % 2 == 0) {
        d = c.a
        set title d font "Arial, 24"
        plot x 
    } else {
        d = c.b
        set title d font "Arial, 24"
        plot x**2
    }
    set yrange [-1:1]
    set xrange [-1:1]
    pause 0.2
    c = c."("
}

hai.plt

hai1 = "(｣・ω・)｣ﾊｲ"
hai2 = "(｣・ω・)｢ﾊｲ"
hai3 = "(｢・ω・)｢ﾊｲ"
hai4 = "(｢・ω・)｣ﾊｲ"

do for [i=1:100]{ 
    if (i % 4 == 0) {
        set title hai1 font "Arial, 24"
        plot x 
    }
    if (i % 4 == 1) {
        set title hai2 font "Arial, 24"
        plot x**2
    }
    if (i % 4 == 2) {
        set title hai3 font "Arial, 24"
        plot x**3
    }
    if (i % 4 == 3) {
        set title hai4 font "Arial, 24"
        plot x**4
    }

    set yrange [-1:1]
    set xrange [-1:1]
    pause 0.3
}